[maven-release-plugin] prepare release forge-1.6.4

- Rotate Aftermath split cards correctly when they're in the graveyard.

forge-ai/pom.xml

@@ -6,7 +6,7 @@
     <parent>
         <artifactId>forge</artifactId>
         <groupId>forge</groupId>
-        <version>1.6.1</version>
+        <version>1.6.4</version>
     </parent>
 
     <artifactId>forge-ai</artifactId>

forge-ai/src/main/java/forge/ai/AIOption.java

@@ -1,4 +1,4 @@
-package forge;
+package forge.ai;
 
 public enum AIOption {
     USE_SIMULATION;

forge-ai/src/main/java/forge/ai/AiAttackController.java

@@ -17,14 +17,9 @@
  */
 package forge.ai;
 
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Random;
-
 import com.google.common.base.Predicate;
 import com.google.common.base.Predicates;
 import com.google.common.collect.Lists;
-
 import forge.ai.ability.AnimateAi;
 import forge.card.CardTypeView;
 import forge.game.GameEntity;
@@ -40,9 +35,14 @@ import forge.game.spellability.SpellAbility;
 import forge.game.trigger.Trigger;
 import forge.game.trigger.TriggerType;
 import forge.game.zone.ZoneType;
+import forge.util.Expressions;
 import forge.util.MyRandom;
 import forge.util.collect.FCollectionView;
 
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
+
 
 //doesHumanAttackAndWin() uses the global variable AllZone.getComputerPlayer()
 /**
@@ -243,6 +243,19 @@ public class AiAttackController {
         return false;
     }
 
+    public final static Card getCardCanBlockAnAttacker(final Card c, final List<Card> attackers, final boolean nextTurn) {
+        final List<Card> attackerList = new ArrayList<Card>(attackers);
+        if (!c.isCreature()) {
+            return null;
+        }
+        for (final Card attacker : attackerList) {
+            if (CombatUtil.canBlock(attacker, c, nextTurn)) {
+                return attacker;
+            }
+        }
+        return null;
+    }
+
     // this checks to make sure that the computer player doesn't lose when the human player attacks
     // this method is used by getAttackers()
     public final List<Card> notNeededAsBlockers(final Player ai, final List<Card> attackers) {
@@ -362,8 +375,12 @@ public class AiAttackController {
                 blockersLeft--;
                 continue;
             }
-            totalAttack += ComputerUtilCombat.damageIfUnblocked(attacker, ai, null, false);
+
-            totalPoison += ComputerUtilCombat.poisonIfUnblocked(attacker, ai);
+            // Test for some special triggers that can change the creature in combat
+            Card effectiveAttacker = ComputerUtilCombat.applyPotentialAttackCloneTriggers(attacker);
+
+            totalAttack += ComputerUtilCombat.damageIfUnblocked(effectiveAttacker, ai, null, false);
+            totalPoison += ComputerUtilCombat.poisonIfUnblocked(effectiveAttacker, ai);
         }
 
         if (totalAttack > 0 && ai.getLife() <= totalAttack && !ai.cantLoseForZeroOrLessLife()) {
@@ -424,16 +441,45 @@ public class AiAttackController {
 
         final Player opp = this.defendingOpponent;
 
-        for (Card attacker : attackers) {
+        // if true, the AI will attempt to identify which blockers will already be taken,
-            if (!CombatUtil.canBeBlocked(attacker, this.blockers, null)
+        // thus attempting to predict how many creatures with evasion can actively block
-                    || attacker.hasKeyword("You may have CARDNAME assign its combat damage as though it weren't blocked.")) {
+        boolean predictEvasion = false;
-                unblockedAttackers.add(attacker);
+        if (ai.getController().isAI()) {
+            AiController aic = ((PlayerControllerAi) ai.getController()).getAi();
+            if (aic.getBooleanProperty(AiProps.COMBAT_ASSAULT_ATTACK_EVASION_PREDICTION)) {
+                predictEvasion = true;
             }
         }
 
+        CardCollection accountedBlockers = new CardCollection(this.blockers);
+        CardCollection categorizedAttackers = new CardCollection();
+
+        if (predictEvasion) {
+            // split categorizedAttackers such that the ones with evasion come first and
+            // can be properly accounted for. Note that at this point the attackers need
+            // to be sorted by power already (see the Collections.sort call above).
+            categorizedAttackers.addAll(ComputerUtilCombat.categorizeAttackersByEvasion(this.attackers));
+        } else {
+            categorizedAttackers.addAll(this.attackers);
+        }
+
+        for (Card attacker : categorizedAttackers) {
+            if (!CombatUtil.canBeBlocked(attacker, accountedBlockers, null)
+                    || attacker.hasKeyword("You may have CARDNAME assign its combat damage as though it weren't blocked.")) {
+                unblockedAttackers.add(attacker);
+            } else {
+                if (predictEvasion) {
+                    List<Card> potentialBestBlockers = CombatUtil.getPotentialBestBlockers(attacker, accountedBlockers, null);
+                    accountedBlockers.removeAll(potentialBestBlockers);
+                }
+            }
+        }
+
+        remainingAttackers.removeAll(unblockedAttackers);
+
         for (Card blocker : this.blockers) {
             if (blocker.hasKeyword("CARDNAME can block any number of creatures.")
-                    || blocker.hasKeyword("CARDNAME can block an additional ninety-nine creatures.")) {
+                    || blocker.hasKeyword("CARDNAME can block an additional ninety-nine creatures each combat.")) {
                 for (Card attacker : this.attackers) {
                     if (CombatUtil.canBlock(attacker, blocker)) {
                         remainingAttackers.remove(attacker);
@@ -449,7 +495,7 @@ public class AiAttackController {
             if (remainingAttackers.isEmpty() || maxBlockersAfterCrew == 0) {
                 break;
             }
-            if (blocker.hasKeyword("CARDNAME can block an additional creature.")) {
+            if (blocker.hasKeyword("CARDNAME can block an additional creature each combat.")) {
                 blockedAttackers.add(remainingAttackers.get(0));
                 remainingAttackers.remove(0);
                 maxBlockersAfterCrew--;
@@ -498,11 +544,16 @@ public class AiAttackController {
         }
         Player prefDefender = (Player) (defs.contains(this.defendingOpponent) ? this.defendingOpponent : defs.get(0));
 
-        final GameEntity entity = ai.getMustAttackEntity();
+        // Attempt to see if there's a defined entity that must be attacked strictly this turn...
+        GameEntity entity = ai.getMustAttackEntityThisTurn();
+        if (entity == null) {
+            // ...or during the attacking creature controller's turn
+            entity = ai.getMustAttackEntity();
+        }
         if (null != entity) {
             int n = defs.indexOf(entity);
             if (-1 == n) {
-                System.out.println("getMustAttackEntity() returned something not in defenders.");
+                System.out.println("getMustAttackEntity() or getMustAttackEntityThisTurn() returned something not in defenders.");
                 return prefDefender;
             } else {
                 return entity;
@@ -544,10 +595,21 @@ public class AiAttackController {
             return;
         }
 
+        // Aggro options
         boolean playAggro = false;
+        int chanceToAttackToTrade = 0;
+        boolean tradeIfTappedOut = false;
+        int extraChanceIfOppHasMana = 0;
+        boolean tradeIfLowerLifePressure = false;
         if (ai.getController().isAI()) {
-            playAggro = ((PlayerControllerAi) ai.getController()).getAi().getProperty(AiProps.PLAY_AGGRO).equals("true");
+            AiController aic = ((PlayerControllerAi) ai.getController()).getAi();
+            playAggro = aic.getBooleanProperty(AiProps.PLAY_AGGRO);
+            chanceToAttackToTrade = aic.getIntProperty(AiProps.CHANCE_TO_ATTACK_INTO_TRADE);
+            tradeIfTappedOut = aic.getBooleanProperty(AiProps.ATTACK_INTO_TRADE_WHEN_TAPPED_OUT);
+            extraChanceIfOppHasMana = aic.getIntProperty(AiProps.CHANCE_TO_ATKTRADE_WHEN_OPP_HAS_MANA);
+            tradeIfLowerLifePressure = aic.getBooleanProperty(AiProps.RANDOMLY_ATKTRADE_ONLY_ON_LOWER_LIFE_PRESSURE);
         }
+
         final boolean bAssault = this.doAssault(ai);
         // TODO: detect Lightmine Field by presence of a card with a specific trigger
         final boolean lightmineField = ComputerUtilCard.isPresentOnBattlefield(ai.getGame(), "Lightmine Field");
@@ -558,7 +620,11 @@ public class AiAttackController {
 
         // TODO probably use AttackConstraints instead of only GlobalAttackRestrictions?
         GlobalAttackRestrictions restrict = GlobalAttackRestrictions.getGlobalRestrictions(ai, combat.getDefenders());
-        final int attackMax = restrict.getMax();
+        int attackMax = restrict.getMax();
+        if (attackMax == -1) {
+            // check with the local limitations vs. the chosen defender
+            attackMax = ComputerUtilCombat.getMaxAttackersFor(defender);
+        }
 
         if (attackMax == 0) {
             //  can't attack anymore
@@ -590,7 +656,7 @@ public class AiAttackController {
                     }
                 }
             }
-            if (mustAttack || attacker.getController().getMustAttackEntity() != null) {
+            if (mustAttack || attacker.getController().getMustAttackEntity() != null || attacker.getController().getMustAttackEntityThisTurn() != null) {
                 combat.addAttacker(attacker, defender);
                 attackersLeft.remove(attacker);
                 numForcedAttackers++;
@@ -711,7 +777,20 @@ public class AiAttackController {
             }
         }
 
-        for (final Card pCard : this.oppList) {
+        boolean predictEvasion = (ai.getController().isAI()
+                && ((PlayerControllerAi)ai.getController()).getAi().getBooleanProperty(AiProps.COMBAT_ATTRITION_ATTACK_EVASION_PREDICTION));
+
+        CardCollection categorizedOppList = new CardCollection();
+        if (predictEvasion) {
+            // If predicting evasion, make sure that attackers with evasion are considered first
+            // (to avoid situations where the AI would predict his non-flyers to be blocked with
+            // flying creatures and then believe that flyers will necessarily be left unblocked)
+            categorizedOppList.addAll(ComputerUtilCombat.categorizeAttackersByEvasion(this.oppList));
+        } else {
+            categorizedOppList.addAll(this.oppList);
+        }
+
+        for (final Card pCard : categorizedOppList) {
             // if the creature can attack next turn add it to counter attackers list
             if (ComputerUtilCombat.canAttackNextTurn(pCard) && pCard.getNetCombatDamage() > 0) {
                 nextTurnAttackers.add(pCard);
@@ -719,8 +798,13 @@ public class AiAttackController {
                 humanForces += 1; // player forces they might use to attack
             }
             // increment player forces that are relevant to an attritional attack - includes walls
-            if (canBlockAnAttacker(pCard, candidateAttackers, true)) {
+
+            Card potentialOppBlocker = getCardCanBlockAnAttacker(pCard, candidateAttackers, true);
+            if (potentialOppBlocker != null) {
                 humanForcesForAttritionalAttack += 1;
+                if (predictEvasion) {
+                    candidateAttackers.remove(potentialOppBlocker);
+                }
             }
         }
 
@@ -847,8 +931,18 @@ public class AiAttackController {
         if (ratioDiff > 0 && doAttritionalAttack) {
             this.aiAggression = 5; // attack at all costs
         } else if ((ratioDiff >= 1 && this.attackers.size() > 1 && (humanLifeToDamageRatio < 2 || outNumber > 0))
-        		|| (playAggro && humanLifeToDamageRatio > 1)) {
+        		|| (playAggro && MyRandom.percentTrue(chanceToAttackToTrade) && humanLifeToDamageRatio > 1)) {
             this.aiAggression = 4; // attack expecting to trade or damage player.
+        } else if (MyRandom.percentTrue(chanceToAttackToTrade) && humanLifeToDamageRatio > 1
+                && defendingOpponent != null
+                && ComputerUtil.countUsefulCreatures(ai) > ComputerUtil.countUsefulCreatures(defendingOpponent)
+                && ai.getLife() > defendingOpponent.getLife()
+                && !ComputerUtilCombat.lifeInDanger(ai, combat)
+                && (ComputerUtilMana.getAvailableManaEstimate(ai) > 0) || tradeIfTappedOut
+                && (ComputerUtilMana.getAvailableManaEstimate(defendingOpponent) == 0) || MyRandom.percentTrue(extraChanceIfOppHasMana)
+                && (!tradeIfLowerLifePressure || (ai.getLifeLostLastTurn() + ai.getLifeLostThisTurn() <
+                        defendingOpponent.getLifeLostThisTurn() + defendingOpponent.getLifeLostThisTurn()))) {
+            this.aiAggression = 4; // random (chance-based) attack expecting to trade or damage player.
         } else if (ratioDiff >= 0 && this.attackers.size() > 1) {
             this.aiAggression = 3; // attack expecting to make good trades or damage player.
         } else if (ratioDiff + outNumber >= -1 || aiLifeToPlayerDamageRatio > 1
@@ -996,7 +1090,8 @@ public class AiAttackController {
         		|| "Blocked".equals(attacker.getSVar("HasAttackEffect"));
         if (!hasCombatEffect) {
             for (String keyword : attacker.getKeywords()) {
-                if (keyword.equals("Wither") || keyword.equals("Infect") || keyword.equals("Lifelink")) {
+                if (keyword.equals("Wither") || keyword.equals("Infect")
+                        || keyword.equals("Lifelink") || keyword.startsWith("Afflict")) {
                     hasCombatEffect = true;
                     break;
                 }
@@ -1037,12 +1132,28 @@ public class AiAttackController {
                                 // and combat will have negative effects
                             }
                         }
+
+                        if (canKillAllDangerous
+                                && !hasAttackEffect && !hasCombatEffect
+                                && (this.attackers.size() <= defenders.size() || attacker.getNetPower() <= 0)) {
+                            if (ai.getController().isAI()) {
+                                if (((PlayerControllerAi)ai.getController()).getAi().getBooleanProperty(AiProps.TRY_TO_AVOID_ATTACKING_INTO_CERTAIN_BLOCK)) {
+                                    // We can't kill a blocker, there is no reason to attack unless we can cripple a
+                                    // blocker or gain life from attacking or we have some kind of another attack/combat effect,
+                                    // or if we can deal damage to the opponent via the sheer number of potential attackers
+                                    // (note that the AI will sometimes still miscount here, and thus attack into a block,
+                                    // because there is no way to check which attackers are actually guaranteed to attack at this point)
+                                    canKillAllDangerous = false;
+                                }
+                            }
+                        }
+
                     }
                 }
             }
         }
         
-        if (!attacker.hasKeyword("vigilance") && ComputerUtilCard.canBeKilledByRoyalAssassin(ai, attacker)) {
+        if (!attacker.hasKeyword("Vigilance") && ComputerUtilCard.canBeKilledByRoyalAssassin(ai, attacker)) {
             canKillAllDangerous = false;
             canBeKilled = true;
             canBeKilledByOne = true;
@@ -1147,18 +1258,51 @@ public class AiAttackController {
                 }
                 if (sa.usesTargeting()) {
                     sa.setActivatingPlayer(c.getController());
-                    if (CardUtil.getValidCardsToTarget(sa.getTargetRestrictions(), sa).isEmpty()) {
+                    List<Card> validTargets = CardUtil.getValidCardsToTarget(sa.getTargetRestrictions(), sa);
+                    if (validTargets.isEmpty()) {
+                        missTarget = true;
+                        break;
+                    } else if (sa.isCurse() && CardLists.filter(validTargets,
+                            CardPredicates.isControlledByAnyOf(c.getController().getOpponents())).isEmpty()) {
+                        // e.g. Ahn-Crop Crasher - the effect is only good when aimed at opponent's creatures
                         missTarget = true;
                         break;
                     }
                 }
+
             }
 
             if (missTarget) {
                 continue;
             }
 
-            if (random.nextBoolean()) {
+            // A specific AI condition for Exert: if specified on the card, the AI will always
+            // exert creatures that meet this condition
+            if (c.hasSVar("AIExertCondition")) {
+                if (!c.getSVar("AIExertCondition").isEmpty()) {
+                    final String needsToExert = c.getSVar("AIExertCondition");
+                    int x = 0;
+                    int y = 0;
+                    String sVar = needsToExert.split(" ")[0];
+                    String comparator = needsToExert.split(" ")[1];
+                    String compareTo = comparator.substring(2);
+                    try {
+                        x = Integer.parseInt(sVar);
+                    } catch (final NumberFormatException e) {
+                        x = CardFactoryUtil.xCount(c, c.getSVar(sVar));
+                    }
+                    try {
+                        y = Integer.parseInt(compareTo);
+                    } catch (final NumberFormatException e) {
+                        y = CardFactoryUtil.xCount(c, c.getSVar(compareTo));
+                    }
+                    if (Expressions.compare(x, comparator, y)) {
+                        shouldExert = true;
+                    }
+                }
+            }
+
+            if (!shouldExert && random.nextBoolean()) {
                 // TODO Improve when the AI wants to use Exert powers
                 shouldExert = true;
             }

forge-ai/src/main/java/forge/ai/AiBlockController.java

@@ -19,26 +19,20 @@ package forge.ai;
 
 import com.google.common.base.Predicate;
 import com.google.common.base.Predicates;
+import forge.card.CardStateName;
 import forge.game.CardTraitBase;
 import forge.game.GameEntity;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
-import forge.game.card.CardCollectionView;
-import forge.game.card.CardLists;
-import forge.game.card.CardPredicates;
-import forge.game.card.CounterType;
 import forge.game.combat.Combat;
 import forge.game.combat.CombatUtil;
 import forge.game.player.Player;
 import forge.game.trigger.Trigger;
 import forge.game.trigger.TriggerType;
+import forge.game.zone.ZoneType;
+import forge.util.MyRandom;
 import forge.util.collect.FCollectionView;
 
-import java.util.ArrayList;
+import java.util.*;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.List;
-import java.util.Map;
 
 
 /**
@@ -89,8 +83,10 @@ public class AiBlockController {
     private List<Card> getSafeBlockers(final Combat combat, final Card attacker, final List<Card> blockersLeft) {
         final List<Card> blockers = new ArrayList<>();
 
+        // We don't check attacker static abilities at this point since the attackers have already attacked and, thus,
+        // their P/T modifiers are active and are counted as a part of getNetPower/getNetToughness
         for (final Card b : blockersLeft) {
-            if (!ComputerUtilCombat.canDestroyBlocker(ai, b, attacker, combat, false)) {
+            if (!ComputerUtilCombat.canDestroyBlocker(ai, b, attacker, combat, false, true)) {
                 blockers.add(b);
             }
         }
@@ -102,8 +98,10 @@ public class AiBlockController {
     private List<Card> getKillingBlockers(final Combat combat, final Card attacker, final List<Card> blockersLeft) {
         final List<Card> blockers = new ArrayList<>();
 
+        // We don't check attacker static abilities at this point since the attackers have already attacked and, thus,
+        // their P/T modifiers are active and are counted as a part of getNetPower/getNetToughness
         for (final Card b : blockersLeft) {
-            if (ComputerUtilCombat.canDestroyAttacker(ai, attacker, b, combat, false)) {
+            if (ComputerUtilCombat.canDestroyAttacker(ai, attacker, b, combat, false, true)) {
                 blockers.add(b);
             }
         }
@@ -151,7 +149,7 @@ public class AiBlockController {
         		for (final Card c : attackers) {
         			sortedAttackers.add(c);
         		}
-        	} else {
+        	} else if (defender instanceof Player && defender.equals(ai)){
         		firstAttacker = combat.getAttackersOf(defender);
         	}
         }
@@ -349,9 +347,9 @@ public class AiBlockController {
                 final List<Card> firstStrikeBlockers = new ArrayList<>();
                 final List<Card> blockGang = new ArrayList<>();
                 for (Card blocker : blockers) {
-                	if (ComputerUtilCombat.canDestroyBlockerBeforeFirstStrike(blocker, attacker, false)) {
+                    if (ComputerUtilCombat.canDestroyBlockerBeforeFirstStrike(blocker, attacker, false)) {
-                		continue;
+                        continue;
-                	}
+                    }
                     if (blocker.hasFirstStrike() || blocker.hasDoubleStrike()) {
                         firstStrikeBlockers.add(blocker);
                     }
@@ -417,7 +415,8 @@ public class AiBlockController {
                             && !ComputerUtilCombat.dealsFirstStrikeDamage(c, false, combat)) {
                         return false;
                     }
-                    return lifeInDanger || ComputerUtilCard.evaluateCreature(c) + diff < ComputerUtilCard.evaluateCreature(attacker);
+                    final boolean randomTrade = wouldLikeToRandomlyTrade(attacker, c, combat);
+                    return lifeInDanger || ComputerUtilCard.evaluateCreature(c) + diff < ComputerUtilCard.evaluateCreature(attacker) || randomTrade;
                 }
             });
             if (usableBlockers.size() < 2) {
@@ -445,9 +444,9 @@ public class AiBlockController {
                         // The attacker will be killed
                         && (absorbedDamage2 + absorbedDamage > attacker.getNetCombatDamage()
                         // only one blocker can be killed
-                        	|| currentValue + addedValue - 50 <= evalAttackerValue
+                        || currentValue + addedValue - 50 <= evalAttackerValue
                         // or attacker is worth more
-                        	|| (lifeInDanger && ComputerUtilCombat.lifeInDanger(ai, combat)))
+                        || (lifeInDanger && ComputerUtilCombat.lifeInDanger(ai, combat)))
                         // or life is in danger
                         && CombatUtil.canBlock(attacker, blocker, combat)) {
                     // this is needed for attackers that can't be blocked by
@@ -497,7 +496,7 @@ public class AiBlockController {
                             && !(damageNeeded > currentDamage + additionalDamage2 + additionalDamage3)
                             // The attacker will be killed
                             && ((absorbedDamage2 + absorbedDamage > netCombatDamage && absorbedDamage3 + absorbedDamage > netCombatDamage
-                               && absorbedDamage3 + absorbedDamage2 > netCombatDamage)
+                            && absorbedDamage3 + absorbedDamage2 > netCombatDamage)
                             // only one blocker can be killed
                             || currentValue + addedValue2 + addedValue3 - 50 <= evalAttackerValue
                             // or attacker is worth more
@@ -526,7 +525,56 @@ public class AiBlockController {
         attackersLeft = (new ArrayList<>(currentAttackers));
     }
 
+    private void makeGangNonLethalBlocks(final Combat combat) {
+        List<Card> currentAttackers = new ArrayList<>(attackersLeft);
+        List<Card> blockers;
+
+        // Try to block a Menace attacker with two blockers, neither of which will die
+        for (final Card attacker : attackersLeft) {
+            if (!attacker.hasKeyword("Menace") && !attacker.hasStartOfKeyword("CantBeBlockedByAmount LT2")) {
+                continue;
+            }
+
+            blockers = getPossibleBlockers(combat, attacker, blockersLeft, false);
+            List<Card> usableBlockers;
+            final List<Card> blockGang = new ArrayList<>();
+            int absorbedDamage; // The amount of damage needed to kill the first blocker
+
+            usableBlockers = CardLists.filter(blockers, new Predicate<Card>() {
+                @Override
+                public boolean apply(final Card c) {
+                    return c.getNetToughness() > attacker.getNetCombatDamage();
+                }
+            });
+            if (usableBlockers.size() < 2) {
+                return;
+            }
+
+            final Card leader = ComputerUtilCard.getWorstCreatureAI(usableBlockers);
+            blockGang.add(leader);
+            usableBlockers.remove(leader);
+            absorbedDamage = ComputerUtilCombat.getEnoughDamageToKill(leader, attacker.getNetCombatDamage(), attacker, true);
+
+            // consider a double block
+            for (final Card blocker : usableBlockers) {
+                final int absorbedDamage2 = ComputerUtilCombat.getEnoughDamageToKill(blocker, attacker.getNetCombatDamage(), attacker, true);
+                // only do it if neither blocking creature will die
+                if (absorbedDamage > attacker.getNetCombatDamage() && absorbedDamage2 > attacker.getNetCombatDamage()) {
+                    currentAttackers.remove(attacker);
+                    combat.addBlocker(attacker, blocker);
+                    if (CombatUtil.canBlock(attacker, leader, combat)) {
+                        combat.addBlocker(attacker, leader);
+                    }
+                    break;
+                }
+            }
+        }
+
+        attackersLeft = (new ArrayList<>(currentAttackers));
+    }
+
     // Bad Trade Blocks (should only be made if life is in danger)
+    // Random Trade Blocks (performed randomly if enabled in profile and only when in favorable conditions)
     /**
      * <p>
      * makeTradeBlocks.
@@ -546,16 +594,29 @@ public class AiBlockController {
                     || attacker.hasKeyword("CARDNAME can't be blocked unless all creatures defending player controls block it.")) {
                 continue;
             }
+            if (ComputerUtilCombat.attackerHasThreateningAfflict(attacker, ai)) {
+                continue;
+            }
 
             List<Card> possibleBlockers = getPossibleBlockers(combat, attacker, blockersLeft, true);
             killingBlockers = getKillingBlockers(combat, attacker, possibleBlockers);
-            if (!killingBlockers.isEmpty() && ComputerUtilCombat.lifeInDanger(ai, combat)) {
+
-                if (ComputerUtilCombat.attackerHasThreateningAfflict(attacker, ai)) {
+            if (!killingBlockers.isEmpty()) {
-                    continue;
-                }
                 final Card blocker = ComputerUtilCard.getWorstCreatureAI(killingBlockers);
-                combat.addBlocker(attacker, blocker);
+                boolean doTrade = false;
-                currentAttackers.remove(attacker);
+
+                if (ComputerUtilCombat.lifeInDanger(ai, combat)) {
+                    // Always trade when life in danger
+                    doTrade = true;
+                } else {
+                    // Randomly trade creatures with lower power and [hopefully] worse abilities, if enabled in profile
+                    doTrade = wouldLikeToRandomlyTrade(attacker, blocker, combat);
+                }
+
+                if (doTrade) {
+                    combat.addBlocker(attacker, blocker);
+                    currentAttackers.remove(attacker);
+                }
             }
         }
         attackersLeft = (new ArrayList<>(currentAttackers));
@@ -760,6 +821,105 @@ public class AiBlockController {
         }
     }
 
+    private void makeChumpBlocksToSavePW(Combat combat) {
+        if (ComputerUtilCombat.lifeInDanger(ai, combat) || ai.getLife() <= ai.getStartingLife() / 5) {
+            // most likely not worth trying to protect planeswalkers when at threateningly low life or in
+            // dangerous combat which threatens lethal or severe damage to face
+            return;
+        }
+
+        AiController aic = ((PlayerControllerAi) ai.getController()).getAi();
+        final int evalThresholdToken = aic.getIntProperty(AiProps.THRESHOLD_TOKEN_CHUMP_TO_SAVE_PLANESWALKER);
+        final int evalThresholdNonToken = aic.getIntProperty(AiProps.THRESHOLD_TOKEN_CHUMP_TO_SAVE_PLANESWALKER);
+        final boolean onlyIfLethal = aic.getBooleanProperty(AiProps.CHUMP_TO_SAVE_PLANESWALKER_ONLY_ON_LETHAL);
+
+        if (evalThresholdToken > 0 || evalThresholdNonToken > 0) {
+            // detect how much damage is threatened to each of the planeswalkers, see which ones would be
+            // worth protecting according to the AI profile properties
+            CardCollection threatenedPWs = new CardCollection();
+            for (final Card attacker : attackers) {
+                GameEntity def = combat.getDefenderByAttacker(attacker);
+                if (def instanceof Card) {
+                    if (!onlyIfLethal) {
+                        threatenedPWs.add((Card) def);
+                    } else {
+                        int damageToPW = 0;
+                        for (final Card pwatkr : combat.getAttackersOf(def)) {
+                            if (!combat.isBlocked(pwatkr)) {
+                                damageToPW += ComputerUtilCombat.predictDamageTo((Card) def, pwatkr.getNetCombatDamage(), pwatkr, true);
+                            }
+                        }
+                        if ((!onlyIfLethal && damageToPW > 0) || damageToPW >= ((Card) def).getCounters(CounterType.LOYALTY)) {
+                            threatenedPWs.add((Card) def);
+                        }
+                    }
+                }
+            }
+
+            CardCollection pwsWithChumpBlocks = new CardCollection();
+            CardCollection chosenChumpBlockers = new CardCollection();
+            CardCollection chumpPWDefenders = CardLists.filter(new CardCollection(this.blockersLeft), new Predicate<Card>() {
+                @Override
+                public boolean apply(Card card) {
+                    return ComputerUtilCard.evaluateCreature(card) <= (card.isToken() ? evalThresholdToken
+                            : evalThresholdNonToken);
+                }
+            });
+            CardLists.sortByPowerAsc(chumpPWDefenders);
+            if (!chumpPWDefenders.isEmpty()) {
+                for (final Card attacker : attackers) {
+                    GameEntity def = combat.getDefenderByAttacker(attacker);
+                    if (def instanceof Card && threatenedPWs.contains((Card) def)) {
+                        if (attacker.hasKeyword("Trample")) {
+                            // don't bother trying to chump a trampling creature
+                            continue;
+                        }
+                        if (!combat.getBlockers(attacker).isEmpty()) {
+                            // already blocked by something, no need to chump
+                            continue;
+                        }
+                        Card blockerDecided = null;
+                        for (final Card blocker : chumpPWDefenders) {
+                            if (CombatUtil.canBlock(attacker, blocker, combat)) {
+                                combat.addBlocker(attacker, blocker);
+                                pwsWithChumpBlocks.add((Card) combat.getDefenderByAttacker(attacker));
+                                chosenChumpBlockers.add(blocker);
+                                blockerDecided = blocker;
+                                blockersLeft.remove(blocker);
+                                break;
+                            }
+                        }
+                        chumpPWDefenders.remove(blockerDecided);
+                    }
+                }
+                // check to see if we managed to cover all the blockers of the planeswalker; if not, bail
+                for (final Card pw : pwsWithChumpBlocks) {
+                    CardCollection pwAttackers = combat.getAttackersOf(pw);
+                    CardCollection pwDefenders = new CardCollection();
+                    boolean isFullyBlocked = true;
+                    if (!pwAttackers.isEmpty()) {
+                        int damageToPW = 0;
+                        for (Card pwAtk : pwAttackers) {
+                            if (!combat.getBlockers(pwAtk).isEmpty()) {
+                                pwDefenders.addAll(combat.getBlockers(pwAtk));
+                            } else {
+                                isFullyBlocked = false;
+                                damageToPW += ComputerUtilCombat.predictDamageTo((Card) pw, pwAtk.getNetCombatDamage(), pwAtk, true);
+                            }
+                        }
+                        if (!isFullyBlocked && damageToPW >= pw.getCounters(CounterType.LOYALTY)) {
+                            for (Card chump : pwDefenders) {
+                                if (chosenChumpBlockers.contains(chump)) {
+                                    combat.removeFromCombat(chump);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
     private void clearBlockers(final Combat combat, final List<Card> possibleBlockers) {
 
         final List<Card> oldBlockers = combat.getAllBlockers();
@@ -824,7 +984,7 @@ public class AiBlockController {
         List<Card> chumpBlockers;
 
         diff = (ai.getLife() * 2) - 5; // This is the minimal gain for an unnecessary trade
-        if (ai.getController().isAI() && diff > 0 && ((PlayerControllerAi) ai.getController()).getAi().getProperty(AiProps.PLAY_AGGRO).equals("true")) {
+        if (ai.getController().isAI() && diff > 0 && ((PlayerControllerAi) ai.getController()).getAi().getBooleanProperty(AiProps.PLAY_AGGRO)) {
         	diff = 0;
         }
 
@@ -856,9 +1016,8 @@ public class AiBlockController {
         // When the AI holds some Fog effect, don't bother about lifeInDanger
         if (!ComputerUtil.hasAFogEffect(ai)) {
         	lifeInDanger = ComputerUtilCombat.lifeInDanger(ai, combat);
-	        if (lifeInDanger) {
+            makeTradeBlocks(combat); // choose necessary trade blocks
-	            makeTradeBlocks(combat); // choose necessary trade blocks
+
-	        }
 	        // if life is still in danger
 	        if (lifeInDanger && ComputerUtilCombat.lifeInDanger(ai, combat)) {
 	            makeChumpBlocks(combat); // choose necessary chump blocks
@@ -956,6 +1115,18 @@ public class AiBlockController {
                 }
             }
         }
+
+
+        // check to see if it's possible to defend a Planeswalker under attack with a chump block,
+        // unless life is low enough to be more worried about saving preserving the life total
+        if (ai.getController().isAI() && !ComputerUtilCombat.lifeInDanger(ai, combat)) {
+            makeChumpBlocksToSavePW(combat);
+        }
+
+        // if there are still blockers left, see if it's possible to block Menace creatures with
+        // non-lethal blockers that won't kill the attacker but won't die to it as well
+        makeGangNonLethalBlocks(combat);
+
         //Check for validity of blocks in case something slipped through
         for (Card attacker : attackers) {
             if (!CombatUtil.canAttackerBeBlockedWithAmount(attacker, combat.getBlockers(attacker).size(), combat)) {
@@ -1056,4 +1227,81 @@ public class AiBlockController {
         return first;
     }
 
+    private boolean wouldLikeToRandomlyTrade(Card attacker, Card blocker, Combat combat) {
+        // Determines if the AI would like to randomly trade its blocker for the attacker in given combat
+        boolean enableRandomTrades = false;
+        boolean randomTradeIfBehindOnBoard = false;
+        boolean randomTradeIfCreatInHand = false;
+        int chanceToTradeToSaveWalker = 0;
+        int chanceToTradeDownToSaveWalker = 0;
+        int minRandomTradeChance = 0;
+        int maxRandomTradeChance = 0;
+        int maxCreatDiff = 0;
+        int maxCreatDiffWithRepl = 0;
+        int aiCreatureCount = 0;
+        int oppCreatureCount = 0;
+        if (ai.getController().isAI()) {
+            AiController aic = ((PlayerControllerAi) ai.getController()).getAi();
+            enableRandomTrades = aic.getBooleanProperty(AiProps.ENABLE_RANDOM_FAVORABLE_TRADES_ON_BLOCK);
+            randomTradeIfBehindOnBoard = aic.getBooleanProperty(AiProps.RANDOMLY_TRADE_EVEN_WHEN_HAVE_LESS_CREATS);
+            randomTradeIfCreatInHand = aic.getBooleanProperty(AiProps.ALSO_TRADE_WHEN_HAVE_A_REPLACEMENT_CREAT);
+            minRandomTradeChance = aic.getIntProperty(AiProps.MIN_CHANCE_TO_RANDOMLY_TRADE_ON_BLOCK);
+            maxRandomTradeChance = aic.getIntProperty(AiProps.MAX_CHANCE_TO_RANDOMLY_TRADE_ON_BLOCK);
+            maxCreatDiff = aic.getIntProperty(AiProps.MAX_DIFF_IN_CREATURE_COUNT_TO_TRADE);
+            maxCreatDiffWithRepl = aic.getIntProperty(AiProps.MAX_DIFF_IN_CREATURE_COUNT_TO_TRADE_WITH_REPL);
+            chanceToTradeToSaveWalker = aic.getIntProperty(AiProps.CHANCE_TO_TRADE_TO_SAVE_PLANESWALKER);
+            chanceToTradeDownToSaveWalker = aic.getIntProperty(AiProps.CHANCE_TO_TRADE_DOWN_TO_SAVE_PLANESWALKER);
+        }
+
+        if (!enableRandomTrades) {
+            return false;
+        }
+
+        aiCreatureCount = ComputerUtil.countUsefulCreatures(ai);
+
+        if (!attackersLeft.isEmpty()) {
+            oppCreatureCount = ComputerUtil.countUsefulCreatures(attackersLeft.get(0).getController());
+        }
+
+        if (attacker.getOwner().equals(ai) && "6".equals(attacker.getSVar("SacMe"))) {
+            // Temporarily controlled object - don't trade with it
+            // TODO: find a more reliable way to figure out that control will be reestablished next turn
+            return false;
+        }
+
+        int numSteps = ai.getStartingLife() - 5; // e.g. 15 steps between 5 life and 20 life
+        float chanceStep = (maxRandomTradeChance - minRandomTradeChance) / numSteps;
+        int chance = (int)Math.max(minRandomTradeChance, (maxRandomTradeChance - (Math.max(5, ai.getLife() - 5)) * chanceStep));
+        if (chance > maxRandomTradeChance) {
+            chance = maxRandomTradeChance;
+        }
+
+        int evalAtk = ComputerUtilCard.evaluateCreature(attacker, true, false);
+        int evalBlk = ComputerUtilCard.evaluateCreature(blocker, true, false);
+        if (blocker.isFaceDown() && blocker.getState(CardStateName.Original).getType().isCreature()) {
+            // if the blocker is a face-down creature (e.g. cast via Morph, Manifest), evaluate it
+            // in relation to the original state, not to the Morph state
+            evalBlk = ComputerUtilCard.evaluateCreature(Card.fromPaperCard(blocker.getPaperCard(), ai), false, true);
+        }
+        int chanceToSavePW = chanceToTradeDownToSaveWalker > 0 && evalAtk + 1 < evalBlk ? chanceToTradeDownToSaveWalker : chanceToTradeToSaveWalker;
+        boolean powerParityOrHigher = blocker.getNetPower() <= attacker.getNetPower();
+        boolean creatureParityOrAllowedDiff = aiCreatureCount
+                + (randomTradeIfBehindOnBoard ? maxCreatDiff : 0) >= oppCreatureCount;
+        boolean wantToTradeWithCreatInHand = randomTradeIfCreatInHand
+                && !CardLists.filter(ai.getCardsIn(ZoneType.Hand), CardPredicates.Presets.CREATURES).isEmpty()
+                && aiCreatureCount + maxCreatDiffWithRepl >= oppCreatureCount;
+        boolean wantToSavePlaneswalker = MyRandom.percentTrue(chanceToSavePW)
+                && combat.getDefenderByAttacker(attacker) instanceof Card
+                && ((Card) combat.getDefenderByAttacker(attacker)).isPlaneswalker();
+        boolean wantToTradeDownToSavePW = chanceToTradeDownToSaveWalker > 0;
+
+        if (((evalBlk <= evalAtk + 1) || (wantToSavePlaneswalker && wantToTradeDownToSavePW)) // "1" accounts for tapped.
+                && powerParityOrHigher
+                && (creatureParityOrAllowedDiff || wantToTradeWithCreatInHand)
+                && (MyRandom.percentTrue(chance) || wantToSavePlaneswalker)) {
+            return true;
+        }
+
+        return false;
+    }
 }

forge-ai/src/main/java/forge/ai/AiCardMemory.java

@@ -41,17 +41,23 @@ import java.util.Set;
 public class AiCardMemory {
 
     private final Set<Card> memMandatoryAttackers;
+    private final Set<Card> memTrickAttackers;
     private final Set<Card> memHeldManaSources;
+    private final Set<Card> memHeldManaSourcesForCombat;
     private final Set<Card> memAttachedThisTurn;
     private final Set<Card> memAnimatedThisTurn;
     private final Set<Card> memBouncedThisTurn;
+    private final Set<Card> memActivatedThisTurn;
 
     public AiCardMemory() {
         this.memMandatoryAttackers = new HashSet<>();
         this.memHeldManaSources = new HashSet<>();
+        this.memHeldManaSourcesForCombat = new HashSet<>();
         this.memAttachedThisTurn = new HashSet<>();
         this.memAnimatedThisTurn = new HashSet<>();
         this.memBouncedThisTurn = new HashSet<>();
+        this.memActivatedThisTurn = new HashSet<>();
+        this.memTrickAttackers = new HashSet<>();
     }
 
     /**
@@ -61,10 +67,13 @@ public class AiCardMemory {
      */
     public enum MemorySet {
         MANDATORY_ATTACKERS,
-        HELD_MANA_SOURCES, 
+        TRICK_ATTACKERS,
+        HELD_MANA_SOURCES_FOR_MAIN2,
+        HELD_MANA_SOURCES_FOR_DECLBLK,
         ATTACHED_THIS_TURN,
         ANIMATED_THIS_TURN,
         BOUNCED_THIS_TURN,
+        ACTIVATED_THIS_TURN,
         //REVEALED_CARDS // stub, not linked to AI code yet
     }
 
@@ -72,14 +81,20 @@ public class AiCardMemory {
         switch (set) {
             case MANDATORY_ATTACKERS:
                 return memMandatoryAttackers;
-            case HELD_MANA_SOURCES:
+            case TRICK_ATTACKERS:
+                return memTrickAttackers;
+            case HELD_MANA_SOURCES_FOR_MAIN2:
                 return memHeldManaSources;
+            case HELD_MANA_SOURCES_FOR_DECLBLK:
+                return memHeldManaSourcesForCombat;
             case ATTACHED_THIS_TURN:
                 return memAttachedThisTurn;
             case ANIMATED_THIS_TURN:
                 return memAnimatedThisTurn;
             case BOUNCED_THIS_TURN:
                 return memBouncedThisTurn;
+            case ACTIVATED_THIS_TURN:
+                return memActivatedThisTurn;
             //case REVEALED_CARDS:
             //    return memRevealedCards;
             default:
@@ -249,10 +264,13 @@ public class AiCardMemory {
      */
     public void clearAllRemembered() {
         clearMemorySet(MemorySet.MANDATORY_ATTACKERS);
-        clearMemorySet(MemorySet.HELD_MANA_SOURCES);
+        clearMemorySet(MemorySet.TRICK_ATTACKERS);
+        clearMemorySet(MemorySet.HELD_MANA_SOURCES_FOR_MAIN2);
+        clearMemorySet(MemorySet.HELD_MANA_SOURCES_FOR_DECLBLK);
         clearMemorySet(MemorySet.ATTACHED_THIS_TURN);
         clearMemorySet(MemorySet.ANIMATED_THIS_TURN);
         clearMemorySet(MemorySet.BOUNCED_THIS_TURN);
+        clearMemorySet(MemorySet.ACTIVATED_THIS_TURN);
     }
 
     // Static functions to simplify access to AI card memory of a given AI player.
@@ -265,6 +283,9 @@ public class AiCardMemory {
     public static boolean isRememberedCard(Player ai, Card c, MemorySet set) {
         return ((PlayerControllerAi)ai.getController()).getAi().getCardMemory().isRememberedCard(c, set);
     }
+    public static boolean isRememberedCardByName(Player ai, String name, MemorySet set) {
+        return ((PlayerControllerAi)ai.getController()).getAi().getCardMemory().isRememberedCardByName(name, set);
+    }
     public static void clearMemorySet(Player ai, MemorySet set) {
         ((PlayerControllerAi)ai.getController()).getAi().getCardMemory().clearMemorySet(set);
     }

forge-ai/src/main/java/forge/ai/AiController.java

@@ -17,14 +17,6 @@
  */
 package forge.ai;
 
-import java.security.InvalidParameterException;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.List;
-import java.util.Map;
-import java.util.Map.Entry;
-
 import com.esotericsoftware.minlog.Log;
 import com.google.common.base.Function;
 import com.google.common.base.Predicate;
@@ -32,52 +24,31 @@ import com.google.common.base.Predicates;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
-
 import forge.ai.ability.ChangeZoneAi;
+import forge.ai.ability.ExploreAi;
 import forge.ai.simulation.SpellAbilityPicker;
 import forge.card.MagicColor;
 import forge.card.mana.ManaCost;
 import forge.deck.CardPool;
 import forge.deck.Deck;
 import forge.deck.DeckSection;
-import forge.game.CardTraitBase;
+import forge.game.*;
-import forge.game.CardTraitPredicates;
-import forge.game.Direction;
-import forge.game.Game;
-import forge.game.GameEntity;
-import forge.game.GlobalRuleChange;
 import forge.game.ability.AbilityFactory;
 import forge.game.ability.AbilityUtils;
 import forge.game.ability.ApiType;
 import forge.game.ability.SpellApiBased;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
-import forge.game.card.CardCollectionView;
-import forge.game.card.CardFactoryUtil;
-import forge.game.card.CardLists;
-import forge.game.card.CardPredicates;
 import forge.game.card.CardPredicates.Presets;
-import forge.game.card.CounterType;
 import forge.game.combat.Combat;
 import forge.game.combat.CombatUtil;
-import forge.game.cost.Cost;
+import forge.game.cost.*;
-import forge.game.cost.CostDiscard;
-import forge.game.cost.CostPart;
-import forge.game.cost.CostPutCounter;
-import forge.game.cost.CostRemoveCounter;
 import forge.game.mana.ManaCostBeingPaid;
+import forge.game.phase.PhaseType;
 import forge.game.player.Player;
 import forge.game.player.PlayerActionConfirmMode;
 import forge.game.replacement.ReplaceMoved;
 import forge.game.replacement.ReplacementEffect;
-import forge.game.spellability.AbilityManaPart;
+import forge.game.spellability.*;
-import forge.game.spellability.AbilitySub;
-import forge.game.spellability.OptionalCost;
-import forge.game.spellability.Spell;
-import forge.game.spellability.SpellAbility;
-import forge.game.spellability.SpellAbilityCondition;
-import forge.game.spellability.SpellAbilityPredicates;
-import forge.game.spellability.SpellPermanent;
 import forge.game.trigger.Trigger;
 import forge.game.trigger.TriggerType;
 import forge.game.trigger.WrappedAbility;
@@ -88,6 +59,10 @@ import forge.util.Expressions;
 import forge.util.MyRandom;
 import forge.util.collect.FCollectionView;
 
+import java.security.InvalidParameterException;
+import java.util.*;
+import java.util.Map.Entry;
+
 /**
  * <p>
  * AiController class.
@@ -605,11 +580,32 @@ public class AiController {
         return null;
     }
 
-    public void reserveManaSourcesForMain2(SpellAbility sa) {
+    public void reserveManaSources(SpellAbility sa) {
+        reserveManaSources(sa, PhaseType.MAIN2);
+    }
+
+    public void reserveManaSources(SpellAbility sa, PhaseType phaseType) {
         ManaCostBeingPaid cost = ComputerUtilMana.calculateManaCost(sa, true, 0);
         CardCollection manaSources = ComputerUtilMana.getManaSourcesToPayCost(cost, sa, player);
+
+        AiCardMemory.MemorySet memSet;
+
+        switch (phaseType) {
+            case MAIN2:
+                memSet = AiCardMemory.MemorySet.HELD_MANA_SOURCES_FOR_MAIN2;
+                break;
+            case COMBAT_DECLARE_BLOCKERS:
+                memSet = AiCardMemory.MemorySet.HELD_MANA_SOURCES_FOR_DECLBLK;
+                break;
+            default:
+                System.out.println("Warning: unsupported mana reservation phase specified for reserveManaSources: "
+                        + phaseType.name() + ", reserving until Main 2 instead. Consider adding support for the phase if needed.");
+                memSet = AiCardMemory.MemorySet.HELD_MANA_SOURCES_FOR_MAIN2;
+                break;
+        }
+
         for (Card c : manaSources) {
-            AiCardMemory.rememberCard(player, c, AiCardMemory.MemorySet.HELD_MANA_SOURCES);
+            AiCardMemory.rememberCard(player, c, memSet);
         }
     }
 
@@ -724,12 +720,31 @@ public class AiController {
             int b1 = b.getPayCosts() == null ? 0 : b.getPayCosts().getTotalMana().getCMC();
 
             // deprioritize planar die roll marked with AIRollPlanarDieParams:LowPriority$ True
-            if (ApiType.RollPlanarDice == a.getApi() && a.getHostCard().hasSVar("AIRollPlanarDieParams") && a.getHostCard().getSVar("AIRollPlanarDieParams").toLowerCase().matches(".*lowpriority\\$\\s*true.*")) {
+            if (ApiType.RollPlanarDice == a.getApi() && a.getHostCard() != null && a.getHostCard().hasSVar("AIRollPlanarDieParams") && a.getHostCard().getSVar("AIRollPlanarDieParams").toLowerCase().matches(".*lowpriority\\$\\s*true.*")) {
                 return 1;
-            } else if (ApiType.RollPlanarDice == b.getApi() && b.getHostCard().hasSVar("AIRollPlanarDieParams") && b.getHostCard().getSVar("AIRollPlanarDieParams").toLowerCase().matches(".*lowpriority\\$\\s*true.*")) {
+            } else if (ApiType.RollPlanarDice == b.getApi() && b.getHostCard() != null && b.getHostCard().hasSVar("AIRollPlanarDieParams") && b.getHostCard().getSVar("AIRollPlanarDieParams").toLowerCase().matches(".*lowpriority\\$\\s*true.*")) {
                 return -1;
             }
 
+            // deprioritize pump spells with pure energy cost (can be activated last,
+            // since energy is generally scarce, plus can benefit e.g. Electrostatic Pummeler)
+            int a2 = 0, b2 = 0;
+            if (a.getApi() == ApiType.Pump && a.getPayCosts() != null && a.getPayCosts().getCostEnergy() != null) {
+                if (a.getPayCosts().hasOnlySpecificCostType(CostPayEnergy.class)) {
+                    a2 = a.getPayCosts().getCostEnergy().convertAmount();
+                }
+            }
+            if (b.getApi() == ApiType.Pump && b.getPayCosts() != null && b.getPayCosts().getCostEnergy() != null) {
+                if (b.getPayCosts().hasOnlySpecificCostType(CostPayEnergy.class)) {
+                    b2 = b.getPayCosts().getCostEnergy().convertAmount();
+                }
+            }
+            if (a2 == 0 && b2 > 0) {
+                return -1;
+            } else if (b2 == 0 && a2 > 0) {
+                return 1;
+            }
+
             // cast 0 mana cost spells first (might be a Mox)
             if (a1 == 0 && b1 > 0 && ApiType.Mana != a.getApi()) {
                 return -1;
@@ -737,9 +752,9 @@ public class AiController {
                 return 1;
             }
             
-            if (a.getHostCard().hasSVar("FreeSpellAI")) {
+            if (a.getHostCard() != null && a.getHostCard().hasSVar("FreeSpellAI")) {
                 return -1;
-            } else if (b.getHostCard().hasSVar("FreeSpellAI")) {
+            } else if (b.getHostCard() != null && b.getHostCard().hasSVar("FreeSpellAI")) {
                 return 1;
             }
 
@@ -752,36 +767,48 @@ public class AiController {
         private int getSpellAbilityPriority(SpellAbility sa) {
             int p = 0;
             Card source = sa.getHostCard();
-            final Player ai = source.getController();
+            final Player ai = source == null ? sa.getActivatingPlayer() : source.getController();
+            if (ai == null) {
+                System.err.println("Error: couldn't figure out the activating player and host card for SA: " + sa);
+                return 0;
+            }
             final boolean noCreatures = ai.getCreaturesInPlay().isEmpty();
-            // puts creatures in front of spells
+
-            if (source.isCreature()) {
+            if (source != null) {
-                p += 1;
+                // puts creatures in front of spells
-            }
+                if (source.isCreature()) {
-            // don't play equipments before having any creatures
+                    p += 1;
-            if (source.isEquipment() && noCreatures) {
+                }
-                p -= 9;
+                // don't play equipments before having any creatures
+                if (source.isEquipment() && noCreatures) {
+                    p -= 9;
+                }
+                // 1. increase chance of using Surge effects
+                // 2. non-surged versions are usually inefficient
+                if (source.getOracleText().contains("surge cost") && !sa.isSurged()) {
+                    p -= 9;
+                }
+                // move snap-casted spells to front
+                if (source.isInZone(ZoneType.Graveyard)) {
+                    if (sa.getMayPlay() != null && source.mayPlay(sa.getMayPlay()) != null) {
+                        p += 50;
+                    }
+                }
+                // artifacts and enchantments with effects that do not stack
+                if ("True".equals(source.getSVar("NonStackingEffect")) && ai.isCardInPlay(source.getName())) {
+                    p -= 9;
+                }
+                // if the profile specifies it, deprioritize Storm spells in an attempt to build up storm count
+                if (source.hasKeyword("Storm") && ai.getController() instanceof PlayerControllerAi) {
+                    p -= (((PlayerControllerAi) ai.getController()).getAi().getIntProperty(AiProps.PRIORITY_REDUCTION_FOR_STORM_SPELLS));
+                }
             }
+
             // use Surge and Prowl costs when able to
             if (sa.isSurged() || 
                     (sa.getRestrictions().getProwlTypes() != null && !sa.getRestrictions().getProwlTypes().isEmpty())) {
                 p += 9;
             }
-            // 1. increase chance of using Surge effects
-            // 2. non-surged versions are usually inefficient
-            if (sa.getHostCard().getOracleText().contains("surge cost") && !sa.isSurged()) {
-                p -= 9;
-            }
-            // move snap-casted spells to front
-            if (source.isInZone(ZoneType.Graveyard)) {
-                if(sa.getMayPlay() != null && source.mayPlay(sa.getMayPlay()) != null) {
-                    p += 50;
-                }
-            }
-            // artifacts and enchantments with effects that do not stack
-            if ("True".equals(source.getSVar("NonStackingEffect")) && ai.isCardInPlay(source.getName())) {
-                p -= 9;
-            }
             // sort planeswalker abilities with most costly first
             if (sa.getRestrictions().isPwAbility()) {
                 final CostPart cost = sa.getPayCosts().getCostParts().get(0);
@@ -801,11 +828,6 @@ public class AiController {
                 p -= 9;
             }
 
-            // if the profile specifies it, deprioritize Storm spells in an attempt to build up storm count
-            if (source.hasKeyword("Storm") && ai.getController() instanceof PlayerControllerAi) {
-                p -= (((PlayerControllerAi)ai.getController()).getAi().getIntProperty(AiProps.PRIORITY_REDUCTION_FOR_STORM_SPELLS));
-            }
-
             // try to cast mana ritual spells before casting spells to maximize potential mana
             if ("ManaRitual".equals(sa.getParam("AILogic"))) {
                 p += 9;
@@ -840,6 +862,8 @@ public class AiController {
             sourceCard = sa.getHostCard();
             if ("Always".equals(sa.getParam("AILogic")) && !validCards.isEmpty()) {
                 min = 1;
+            } else if ("VolrathsShapeshifter".equals(sa.getParam("AILogic"))) {
+                return SpecialCardAi.VolrathsShapeshifter.targetBestCreature(player, sa);
             }
         }
 
@@ -858,6 +882,9 @@ public class AiController {
             }
             if (prefCard == null) {
                 prefCard = ComputerUtil.getCardPreference(player, sourceCard, "DiscardCost", validCards);
+                if (prefCard != null && prefCard.hasSVar("DoNotDiscardIfAble")) {
+                    prefCard = null;
+                }
             }
             if (prefCard != null) {
                 discardList.add(prefCard);
@@ -894,13 +921,52 @@ public class AiController {
                 if (numLandsInHand > 0) {
                     numLandsAvailable++;
                 }
+
                 //Discard unplayable card
-                if (validCards.get(0).getCMC() > numLandsAvailable) {
+                boolean discardedUnplayable = false;
-                    discardList.add(validCards.get(0));
+                for (int j = 0; j < validCards.size(); j++) {
-                    validCards.remove(validCards.get(0));
+                    if (validCards.get(j).getCMC() > numLandsAvailable && !validCards.get(j).hasSVar("DoNotDiscardIfAble")) {
+                        discardList.add(validCards.get(j));
+                        validCards.remove(validCards.get(j));
+                        discardedUnplayable = true;
+                        break;
+                    } else if (validCards.get(j).getCMC() <= numLandsAvailable) {
+                        // cut short to avoid looping over cards which are guaranteed not to fit the criteria
+                        break;
+                    }
                 }
-                else { //Discard worst card
+
+                if (!discardedUnplayable) {
+                    // discard worst card
                     Card worst = ComputerUtilCard.getWorstAI(validCards);
+                    if (worst == null) {
+                        // there were only instants and sorceries, and maybe cards that are not good to discard, so look
+                        // for more discard options
+                        worst = ComputerUtilCard.getCheapestSpellAI(validCards);
+                    }
+                    if (worst == null && !validCards.isEmpty()) {
+                        // still nothing chosen, so choose the first thing that works, trying not to make DoNotDiscardIfAble
+                        // discards
+                        for (Card c : validCards) {
+                            if (!c.hasSVar("DoNotDiscardIfAble")) {
+                                worst = c;
+                                break;
+                            }
+                        }
+                        // Only DoNotDiscardIfAble cards? If we have a duplicate for something, discard it
+                        if (worst == null) {
+                            for (Card c : validCards) {
+                                if (CardLists.filter(player.getCardsIn(ZoneType.Hand), CardPredicates.nameEquals(c.getName())).size() > 1) {
+                                    worst = c;
+                                    break;
+                                }
+                            }
+                            if (worst == null) {
+                                // Otherwise just grab a random card and discard it
+                                worst = Aggregates.random(validCards);
+                            }
+                        }
+                    }
                     discardList.add(worst);
                     validCards.remove(worst);
                 }
@@ -1059,6 +1125,20 @@ public class AiController {
         }
 
         CardCollection landsWannaPlay = ComputerUtilAbility.getAvailableLandsToPlay(game, player);
+        CardCollection playBeforeLand = CardLists.filter(player.getCardsIn(ZoneType.Hand), new Predicate<Card>() {
+            @Override
+            public boolean apply(Card card) {
+                return "true".equalsIgnoreCase(card.getSVar("PlayBeforeLandDrop"));
+            }
+        });
+
+        if (!playBeforeLand.isEmpty()) {
+            SpellAbility wantToPlayBeforeLand = chooseSpellAbilityToPlayFromList(ComputerUtilAbility.getSpellAbilities(playBeforeLand, player), false);
+            if (wantToPlayBeforeLand != null) {
+                return singleSpellAbilityList(wantToPlayBeforeLand);
+            }
+        }
+
         if (landsWannaPlay != null) {
             landsWannaPlay = filterLandsToPlay(landsWannaPlay);
             Log.debug("Computer " + game.getPhaseHandler().getPhase().nameForUi);
@@ -1066,10 +1146,12 @@ public class AiController {
                 Card land = chooseBestLandToPlay(landsWannaPlay);
                 if (ComputerUtil.getDamageFromETB(player, land) < player.getLife() || !player.canLoseLife() 
                         || player.cantLoseForZeroOrLessLife() ) {
-                    game.PLAY_LAND_SURROGATE.setHostCard(land);
+                    if (!game.getPhaseHandler().is(PhaseType.MAIN1) || !isSafeToHoldLandDropForMain2(land)) {
-                    final List<SpellAbility> abilities = Lists.newArrayList();
+                        game.PLAY_LAND_SURROGATE.setHostCard(land);
-                    abilities.add(game.PLAY_LAND_SURROGATE);
+                        final List<SpellAbility> abilities = Lists.newArrayList();
-                    return abilities;
+                        abilities.add(game.PLAY_LAND_SURROGATE);
+                        return abilities;
+                    }
                 }
             }
         }
@@ -1077,6 +1159,103 @@ public class AiController {
         return singleSpellAbilityList(getSpellAbilityToPlay());
     }
 
+    private boolean isSafeToHoldLandDropForMain2(Card landToPlay) {
+        if (!MyRandom.percentTrue(getIntProperty(AiProps.HOLD_LAND_DROP_FOR_MAIN2_IF_UNUSED))) {
+            // check against the chance specified in the profile
+            return false;
+        }
+        if (game.getPhaseHandler().getTurn() <= 2) {
+            // too obvious when doing it on the very first turn of the game
+            return false;
+        }
+
+        CardCollection inHand = CardLists.filter(player.getCardsIn(ZoneType.Hand),
+                Predicates.not(CardPredicates.Presets.LANDS));
+        CardCollectionView otb = player.getCardsIn(ZoneType.Battlefield);
+
+        // TODO: improve the detection of taplands
+        boolean isTapLand = false;
+        for (ReplacementEffect repl : landToPlay.getReplacementEffects()) {
+            if (repl.getParamOrDefault("Description", "").equals("CARDNAME enters the battlefield tapped.")) {
+                isTapLand = true;
+            }
+        }
+
+        int totalCMCInHand = Aggregates.sum(inHand, CardPredicates.Accessors.fnGetCmc);
+        int minCMCInHand = Aggregates.min(inHand, CardPredicates.Accessors.fnGetCmc);
+        int predictedMana = ComputerUtilMana.getAvailableManaEstimate(player, true);
+
+        boolean canCastWithLandDrop = (predictedMana + 1 >= minCMCInHand) && !isTapLand;
+        boolean cantCastAnythingNow = predictedMana < minCMCInHand;
+
+        boolean hasRelevantAbsOTB = !CardLists.filter(otb, new Predicate<Card>() {
+            @Override
+            public boolean apply(Card card) {
+                boolean isTapLand = false;
+                for (ReplacementEffect repl : card.getReplacementEffects()) {
+                    // TODO: improve the detection of taplands
+                    if (repl.getParamOrDefault("Description", "").equals("CARDNAME enters the battlefield tapped.")) {
+                        isTapLand = true;
+                    }
+                }
+
+                for (SpellAbility sa : card.getSpellAbilities()) {
+                    if (sa.getPayCosts() != null && sa.isAbility()
+                            && sa.getPayCosts().getCostMana() != null
+                            && sa.getPayCosts().getCostMana().getMana().getCMC() > 0
+                            && (!sa.getPayCosts().hasTapCost() || !isTapLand)
+                            && (!sa.hasParam("ActivationZone") || sa.getParam("ActivationZone").contains("Battlefield"))) {
+                        return true;
+                    }
+                }
+                return false;
+            }
+        }).isEmpty();
+
+        boolean hasLandBasedEffect = !CardLists.filter(otb, new Predicate<Card>() {
+            @Override
+            public boolean apply(Card card) {
+                for (Trigger t : card.getTriggers()) {
+                    Map<String, String> params = t.getMapParams();
+                    if ("ChangesZone".equals(params.get("Mode"))
+                            && params.containsKey("ValidCard")
+                            && !params.get("ValidCard").contains("nonLand")
+                            && ((params.get("ValidCard").contains("Land")) || (params.get("ValidCard").contains("Permanent")))
+                            && "Battlefield".equals(params.get("Destination"))) {
+                        // Landfall and other similar triggers
+                        return true;
+                    }
+                }
+                for (String sv : card.getSVars().keySet()) {
+                    String varValue = card.getSVar(sv);
+                    if (varValue.startsWith("Count$Valid") || sv.equals("BuffedBy")) {
+                        if (varValue.contains("Land") || varValue.contains("Plains") || varValue.contains("Forest")
+                                || varValue.contains("Mountain") || varValue.contains("Island") || varValue.contains("Swamp")
+                                || varValue.contains("Wastes")) {
+                            // In presence of various cards that get buffs like "equal to the number of lands you control",
+                            // safer for our AI model to just play the land earlier rather than make a blunder
+                            return true;
+                        }
+                    }
+                }
+                return false;
+            }
+        }).isEmpty();
+
+        // TODO: add prediction for effects that will untap a tapland as it enters the battlefield
+        if (!canCastWithLandDrop && cantCastAnythingNow && !hasLandBasedEffect && (!hasRelevantAbsOTB || isTapLand)) {
+            // Hopefully there's not much to do with the extra mana immediately, can wait for Main 2
+            return true;
+        }
+        if ((predictedMana <= totalCMCInHand && canCastWithLandDrop) || (hasRelevantAbsOTB && !isTapLand) || hasLandBasedEffect) {
+            // Might need an extra land to cast something, or for some kind of an ETB ability with a cost or an
+            // alternative cost (if we cast it in Main 1), or to use an activated ability on the battlefield
+            return false;
+        }
+
+        return true;
+    }
+
     private final SpellAbility getSpellAbilityToPlay() {
         // if top of stack is owned by me
         if (!game.getStack().isEmpty() && game.getStack().peekAbility().getActivatingPlayer().equals(player)) {
@@ -1306,7 +1485,7 @@ public class AiController {
                     + MyRandom.getRandom().nextInt(3);
             return Math.max(remaining, min) / 2;
         } else if ("LowestLoseLife".equals(logic)) {
-            return MyRandom.getRandom().nextInt(Math.min(player.getLife() / 3, player.getOpponent().getLife())) + 1;
+            return MyRandom.getRandom().nextInt(Math.min(player.getLife() / 3, ComputerUtil.getOpponentFor(player).getLife())) + 1;
         } else if ("HighestGetCounter".equals(logic)) {
             return MyRandom.getRandom().nextInt(3);
         } else if (source.hasSVar("EnergyToPay")) {
@@ -1428,6 +1607,24 @@ public class AiController {
                     } else {
                         break;
                     }
+
+                    // Special case for Bow to My Command which simulates a complex tap cost via ChooseCard
+                    // TODO: consider enhancing support for tapXType<Any/...> in UnlessCost to get rid of this hack
+                    if ("BowToMyCommand".equals(sa.getParam("AILogic"))) {
+                        if (!sa.getHostCard().getZone().is(ZoneType.Command)) {
+                            // Make sure that other opponents do not tap for an already abandoned scheme
+                            result.clear();
+                            break;
+                        }
+
+                        int totPower = 0;
+                        for (Card p : result) {
+                            totPower += p.getNetPower();
+                        }
+                        if (totPower >= 8) {
+                            break;
+                        }
+                    }
                 }
         }
 
@@ -1553,7 +1750,11 @@ public class AiController {
         if (useSimulation) {
             return simPicker.chooseCardToHiddenOriginChangeZone(destination, origin, sa, fetchList, player2, decider);
         }
-        return ChangeZoneAi.chooseCardToHiddenOriginChangeZone(destination, origin, sa, fetchList, player2, decider);
+        if (sa.getApi() == ApiType.Explore) {
+            return ExploreAi.shouldPutInGraveyard(fetchList, decider);
+        } else {
+            return ChangeZoneAi.chooseCardToHiddenOriginChangeZone(destination, origin, sa, fetchList, player2, decider);
+        }
     }
 
     public List<SpellAbility> orderPlaySa(List<SpellAbility> activePlayerSAs) {

forge-ai/src/main/java/forge/ai/AiCostDecision.java

@@ -469,7 +469,7 @@ public class AiCostDecision extends CostDecisionMakerBase {
         CardCollectionView totap;
         if (isVehicle) {
             totalP = type.split("withTotalPowerGE")[1];
-            type = type.replace("+withTotalPowerGE" + totalP, "");
+            type = TextUtil.fastReplace(type, "+withTotalPowerGE", "");
             totap = ComputerUtil.chooseTapTypeAccumulatePower(player, type, ability, !cost.canTapSource, Integer.parseInt(totalP), tapped);
         } else {
             totap = ComputerUtil.chooseTapType(player, type, source, !cost.canTapSource, c, tapped);

forge-ai/src/main/java/forge/ai/AiProfileUtil.java

@@ -21,6 +21,7 @@ import forge.LobbyPlayer;
 import forge.util.Aggregates;
 import forge.util.FileUtil;
 
+import forge.util.TextUtil;
 import org.apache.commons.lang3.ArrayUtils;
 
 import java.io.File;
@@ -52,7 +53,7 @@ public class AiProfileUtil {
      * @return the full relative path and file name for the given profile.
      */
     private static String buildFileName(final String profileName) {
-        return String.format("%s/%s%s", AI_PROFILE_DIR, profileName, AI_PROFILE_EXT);
+        return TextUtil.concatNoSpace(AI_PROFILE_DIR, "/", profileName, AI_PROFILE_EXT);
     }
     
     /**

forge-ai/src/main/java/forge/ai/AiProps.java

@@ -29,20 +29,45 @@ public enum AiProps { /** */
     DEFAULT_PLANAR_DIE_ROLL_CHANCE ("50"), /** */
     MULLIGAN_THRESHOLD ("5"), /** */
     PLANAR_DIE_ROLL_HESITATION_CHANCE ("10"),
+    HOLD_LAND_DROP_FOR_MAIN2_IF_UNUSED ("0"), /** */
     CHEAT_WITH_MANA_ON_SHUFFLE ("false"),
     MOVE_EQUIPMENT_TO_BETTER_CREATURES ("from_useless_only"),
     MOVE_EQUIPMENT_CREATURE_EVAL_THRESHOLD ("60"),
     PRIORITIZE_MOVE_EQUIPMENT_IF_USELESS ("true"),
     PREDICT_SPELLS_FOR_MAIN2 ("true"), /** */
     RESERVE_MANA_FOR_MAIN2_CHANCE ("0"), /** */
-    PLAY_AGGRO ("false"), /** */
+    PLAY_AGGRO ("false"),
-    MIN_SPELL_CMC_TO_COUNTER ("0"),
+    CHANCE_TO_ATTACK_INTO_TRADE ("40"), /** */
+    RANDOMLY_ATKTRADE_ONLY_ON_LOWER_LIFE_PRESSURE ("true"), /** */
+    ATTACK_INTO_TRADE_WHEN_TAPPED_OUT ("false"), /** */
+    CHANCE_TO_ATKTRADE_WHEN_OPP_HAS_MANA ("0"), /** */
+    TRY_TO_AVOID_ATTACKING_INTO_CERTAIN_BLOCK ("true"), /** */
+    TRY_TO_HOLD_COMBAT_TRICKS_UNTIL_BLOCK ("false"), /** */
+    CHANCE_TO_HOLD_COMBAT_TRICKS_UNTIL_BLOCK ("30"), /** */
+    ENABLE_RANDOM_FAVORABLE_TRADES_ON_BLOCK ("true"), /** */
+    RANDOMLY_TRADE_EVEN_WHEN_HAVE_LESS_CREATS ("false"), /** */
+    MAX_DIFF_IN_CREATURE_COUNT_TO_TRADE ("1"), /** */
+    ALSO_TRADE_WHEN_HAVE_A_REPLACEMENT_CREAT ("true"), /** */
+    MAX_DIFF_IN_CREATURE_COUNT_TO_TRADE_WITH_REPL ("1"), /** */
+    MIN_CHANCE_TO_RANDOMLY_TRADE_ON_BLOCK ("30"), /** */
+    MAX_CHANCE_TO_RANDOMLY_TRADE_ON_BLOCK ("70"), /** */
+    CHANCE_TO_TRADE_TO_SAVE_PLANESWALKER ("70"), /** */
+    CHANCE_TO_TRADE_DOWN_TO_SAVE_PLANESWALKER ("0"), /** */
+    THRESHOLD_TOKEN_CHUMP_TO_SAVE_PLANESWALKER ("135"), /** */
+    THRESHOLD_NONTOKEN_CHUMP_TO_SAVE_PLANESWALKER ("110"), /** */
+    CHUMP_TO_SAVE_PLANESWALKER_ONLY_ON_LETHAL ("true"), /** */
+    MIN_SPELL_CMC_TO_COUNTER ("0"), /** */
+    CHANCE_TO_COUNTER_CMC_1 ("50"), /** */
+    CHANCE_TO_COUNTER_CMC_2 ("75"), /** */
+    CHANCE_TO_COUNTER_CMC_3 ("100"), /** */
     ALWAYS_COUNTER_OTHER_COUNTERSPELLS ("true"), /** */
     ALWAYS_COUNTER_DAMAGE_SPELLS ("true"), /** */
     ALWAYS_COUNTER_CMC_0_MANA_MAKING_PERMS ("true"), /** */
     ALWAYS_COUNTER_REMOVAL_SPELLS ("true"), /** */
+    ALWAYS_COUNTER_PUMP_SPELLS ("true"), /** */
+    ALWAYS_COUNTER_AURAS ("true"), /** */
     ALWAYS_COUNTER_SPELLS_FROM_NAMED_CARDS (""), /** */
-    ACTIVELY_DESTROY_ARTS_AND_NONAURA_ENCHS ("false"), /** */
+    ACTIVELY_DESTROY_ARTS_AND_NONAURA_ENCHS ("true"), /** */
     PRIORITY_REDUCTION_FOR_STORM_SPELLS ("0"), /** */
     USE_BERSERK_AGGRESSIVELY ("false"), /** */
     MIN_COUNT_FOR_STORM_SPELLS ("0"), /** */
@@ -50,7 +75,31 @@ public enum AiProps { /** */
     STRIPMINE_MIN_LANDS_FOR_NO_TIMING_CHECK ("3"), /** */
     STRIPMINE_MIN_LANDS_OTB_FOR_NO_TEMPO_CHECK ("6"), /** */
     STRIPMINE_MAX_LANDS_TO_ATTEMPT_MANALOCKING ("3"), /** */
-    STRIPMINE_HIGH_PRIORITY_ON_SKIPPED_LANDDROP ("false"); /** */
+    STRIPMINE_HIGH_PRIORITY_ON_SKIPPED_LANDDROP ("false"),
+    TOKEN_GENERATION_ABILITY_CHANCE ("80"), /** */
+    TOKEN_GENERATION_ALWAYS_IF_FROM_PLANESWALKER ("true"), /** */
+    TOKEN_GENERATION_ALWAYS_IF_OPP_ATTACKS ("true"), /** */
+    SCRY_NUM_LANDS_TO_STILL_NEED_MORE ("4"), /** */
+    SCRY_NUM_LANDS_TO_NOT_NEED_MORE ("7"), /** */
+    SCRY_NUM_CREATURES_TO_NOT_NEED_SUBPAR_ONES ("4"), /** */
+    SCRY_EVALTHR_CREATCOUNT_TO_SCRY_AWAY_LOWCMC ("3"), /** */
+    SCRY_EVALTHR_TO_SCRY_AWAY_LOWCMC_CREATURE ("160"), /** */
+    SCRY_EVALTHR_CMC_THRESHOLD ("3"), /** */
+    SCRY_IMMEDIATELY_UNCASTABLE_TO_BOTTOM ("false"), /** */
+    SCRY_IMMEDIATELY_UNCASTABLE_CMC_DIFF ("1"), /** */
+    COMBAT_ASSAULT_ATTACK_EVASION_PREDICTION ("true"), /** */
+    COMBAT_ATTRITION_ATTACK_EVASION_PREDICTION ("true"), /** */
+    CONSERVATIVE_ENERGY_PAYMENT_ONLY_IN_COMBAT ("true"), /** */
+    CONSERVATIVE_ENERGY_PAYMENT_ONLY_DEFENSIVELY ("true"), /** */
+    BOUNCE_ALL_TO_HAND_CREAT_EVAL_DIFF ("200"), /** */
+    BOUNCE_ALL_ELSEWHERE_CREAT_EVAL_DIFF ("200"), /** */
+    BOUNCE_ALL_TO_HAND_NONCREAT_EVAL_DIFF ("3"), /** */
+    BOUNCE_ALL_ELSEWHERE_NONCREAT_EVAL_DIFF ("3"), /** */
+    INTUITION_ALTERNATIVE_LOGIC ("false"), /** */
+    EXPLORE_MAX_CMC_DIFF_TO_PUT_IN_GRAVEYARD ("2"),
+    EXPLORE_NUM_LANDS_TO_STILL_NEED_MORE ("2"); /** */
+    // Experimental features, must be removed after extensive testing and, ideally, defaulting
+    // <-- There are no experimental options here -->
 
     private final String strDefaultVal;
 

forge-ai/src/main/java/forge/ai/ComputerUtil.java

@@ -17,23 +17,9 @@
  */
 package forge.ai;
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-import java.util.Map;
-import java.util.Random;
-
-import org.apache.commons.lang3.StringUtils;
-
 import com.google.common.base.Predicate;
 import com.google.common.base.Predicates;
-import com.google.common.collect.ImmutableList;
+import com.google.common.collect.*;
-import com.google.common.collect.Iterables;
-import com.google.common.collect.Lists;
-import com.google.common.collect.Maps;
-import com.google.common.collect.Multimap;
-
 import forge.ai.ability.ProtectAi;
 import forge.ai.ability.TokenAi;
 import forge.card.CardType;
@@ -46,32 +32,17 @@ import forge.game.ability.AbilityFactory;
 import forge.game.ability.AbilityUtils;
 import forge.game.ability.ApiType;
 import forge.game.ability.effects.CharmEffect;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
-import forge.game.card.CardCollectionView;
-import forge.game.card.CardLists;
-import forge.game.card.CardPredicates;
 import forge.game.card.CardPredicates.Presets;
-import forge.game.card.CardUtil;
-import forge.game.card.CounterType;
 import forge.game.combat.Combat;
 import forge.game.combat.CombatUtil;
-import forge.game.cost.Cost;
+import forge.game.cost.*;
-import forge.game.cost.CostDiscard;
-import forge.game.cost.CostPart;
-import forge.game.cost.CostPayment;
-import forge.game.cost.CostPutCounter;
-import forge.game.cost.CostSacrifice;
 import forge.game.phase.PhaseHandler;
 import forge.game.phase.PhaseType;
 import forge.game.player.Player;
 import forge.game.replacement.ReplacementEffect;
 import forge.game.replacement.ReplacementLayer;
-import forge.game.spellability.AbilityManaPart;
+import forge.game.spellability.*;
-import forge.game.spellability.AbilitySub;
-import forge.game.spellability.SpellAbility;
-import forge.game.spellability.SpellAbilityStackInstance;
-import forge.game.spellability.TargetRestrictions;
 import forge.game.staticability.StaticAbility;
 import forge.game.trigger.Trigger;
 import forge.game.trigger.TriggerType;
@@ -79,7 +50,11 @@ import forge.game.zone.Zone;
 import forge.game.zone.ZoneType;
 import forge.util.Aggregates;
 import forge.util.MyRandom;
+import forge.util.TextUtil;
 import forge.util.collect.FCollection;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.*;
 
 
 /**
@@ -99,14 +74,24 @@ public class ComputerUtil {
         final Card source = sa.getHostCard();
 
         if (sa.isSpell() && !source.isCopiedSpell()) {
+            if (source.getType().hasStringType("Arcane")) {
+                sa = AbilityUtils.addSpliceEffects(sa);
+                if (sa.getSplicedCards() != null && !sa.getSplicedCards().isEmpty() && ai.getController().isAI()) {
+                    // we need to reconsider and retarget the SA after additional SAs have been added onto it via splice,
+                    // otherwise the AI will fail to add the card to stack and that'll knock it out of the game
+                    sa.resetTargets();
+                    if (((PlayerControllerAi) ai.getController()).getAi().canPlaySa(sa) != AiPlayDecision.WillPlay) {
+                        // for whatever reason the AI doesn't want to play the thing with the spliced subs anymore,
+                        // proceeding past this point may result in an illegal play
+                        return false;
+                    }
+                }
+            }
+
             source.setCastSA(sa);
             sa.setLastStateBattlefield(game.getLastStateBattlefield());
             sa.setLastStateGraveyard(game.getLastStateGraveyard());
             sa.setHostCard(game.getAction().moveToStack(source, sa));
-
-            if (source.getType().hasStringType("Arcane")) {
-                sa = AbilityUtils.addSpliceEffects(sa);
-            }
         }
 
         if (sa.getApi() == ApiType.Charm && !sa.isWrapper()) {
@@ -192,7 +177,7 @@ public class ComputerUtil {
         if (unless != null && !unless.endsWith(">")) {
             final int amount = AbilityUtils.calculateAmount(source, unless, sa);
 
-            final int usableManaSources = ComputerUtilMana.getAvailableMana(ai.getOpponent(), true).size();
+            final int usableManaSources = ComputerUtilMana.getAvailableManaSources(ComputerUtil.getOpponentFor(ai), true).size();
 
             // If the Unless isn't enough, this should be less likely to be used
             if (amount > usableManaSources) {
@@ -310,11 +295,13 @@ public class ComputerUtil {
 
     public static Card getCardPreference(final Player ai, final Card activate, final String pref, final CardCollection typeList) {
         final Game game = ai.getGame();
+        String prefDef = "";
         if (activate != null) {
+            prefDef = activate.getSVar("AIPreference");
             final String[] prefGroups = activate.getSVar("AIPreference").split("\\|");
             for (String prefGroup : prefGroups) {
                 final String[] prefValid = prefGroup.trim().split("\\$");
-                if (prefValid[0].equals(pref)) {
+                if (prefValid[0].equals(pref) && !prefValid[1].startsWith("Special:")) {
                     final CardCollection prefList = CardLists.getValidCards(typeList, prefValid[1].split(","), activate.getController(), activate, null);
                     CardCollection overrideList = null;
 
@@ -411,6 +398,11 @@ public class ComputerUtil {
                 }
             }
 
+            // Survival of the Fittest logic
+            if (prefDef.contains("DiscardCost$Special:SurvivalOfTheFittest")) {
+                return SpecialCardAi.SurvivalOfTheFittest.considerDiscardTarget(ai);
+            }
+
             // Discard lands
             final CardCollection landsInHand = CardLists.getType(typeList, "Land");
             if (!landsInHand.isEmpty()) {
@@ -848,11 +840,11 @@ public class ComputerUtil {
                                 continue; // Won't play ability
                             }
 
-                            if (!ComputerUtilCost.checkSacrificeCost(controller, abCost, c)) {
+                            if (!ComputerUtilCost.checkSacrificeCost(controller, abCost, c, sa)) {
                                 continue; // Won't play ability
                             }
 
-                            if (!ComputerUtilCost.checkCreatureSacrificeCost(controller, abCost, c)) {
+                            if (!ComputerUtilCost.checkCreatureSacrificeCost(controller, abCost, c, sa)) {
                                 continue; // Won't play ability
                             }
                         }
@@ -868,7 +860,7 @@ public class ComputerUtil {
                     }
 
                 }  catch (final Exception ex) {
-                    throw new RuntimeException(String.format("There is an error in the card code for %s:%s", c.getName(), ex.getMessage()), ex);
+                    throw new RuntimeException(TextUtil.concatNoSpace("There is an error in the card code for ", c.getName(), ":", ex.getMessage()), ex);
                 } 
             }
         }
@@ -907,7 +899,7 @@ public class ComputerUtil {
                         }
                     }
                 } catch (final Exception ex) {
-                    throw new RuntimeException(String.format("There is an error in the card code for %s:%s", c.getName(), ex.getMessage()), ex);
+                    throw new RuntimeException(TextUtil.concatNoSpace("There is an error in the card code for ", c.getName(), ":", ex.getMessage()), ex);
                 }
             }
         }
@@ -926,7 +918,7 @@ public class ComputerUtil {
         		return true;
         	} else if (card.getSVar("PlayMain1").equals("OPPONENTCREATURES")) {
         		//Only play these main1 when the opponent has creatures (stealing and giving them haste)
-        		if (!card.getController().getOpponent().getCreaturesInPlay().isEmpty()) {
+        		if (!ai.getOpponents().getCreaturesInPlay().isEmpty()) {
         			return true;
         		}
         	} else if (!card.getController().getCreaturesInPlay().isEmpty()) {
@@ -934,6 +926,15 @@ public class ComputerUtil {
         	}
         }
 
+        // try not to cast Raid creatures in main 1 if an attack is likely
+        if ("Count$AttackersDeclared".equals(card.getSVar("RaidTest")) && !card.hasKeyword("Haste")) {
+            for (Card potentialAtkr: ai.getCreaturesInPlay()) {
+                if (ComputerUtilCard.doesCreatureAttackAI(ai, potentialAtkr)) {
+                    return false;
+                }
+            }
+        }
+
         if (card.getManaCost().isZero()) {
         	return true;
         }
@@ -973,7 +974,7 @@ public class ComputerUtil {
                     return true;
                 }
             }
-            if (card.isEquipment() && buffedcard.isCreature() && CombatUtil.canAttack(buffedcard, ai.getOpponent())) {
+            if (card.isEquipment() && buffedcard.isCreature() && CombatUtil.canAttack(buffedcard, ComputerUtil.getOpponentFor(ai))) {
                 return true;
             }
             if (card.isCreature()) {
@@ -993,7 +994,7 @@ public class ComputerUtil {
         } // BuffedBy
 
         // get all cards the human controls with AntiBuffedBy
-        final CardCollectionView antibuffed = ai.getOpponent().getCardsIn(ZoneType.Battlefield);
+        final CardCollectionView antibuffed = ComputerUtil.getOpponentFor(ai).getCardsIn(ZoneType.Battlefield);
         for (Card buffedcard : antibuffed) {
             if (buffedcard.hasSVar("AntiBuffedBy")) {
                 final String buffedby = buffedcard.getSVar("AntiBuffedBy");
@@ -1033,11 +1034,11 @@ public class ComputerUtil {
             return ret;
         } else {
             // Otherwise, if life is possibly in danger, then this is fine.
-            Combat combat = new Combat(ai.getOpponent());
+            Combat combat = new Combat(ComputerUtil.getOpponentFor(ai));
-            CardCollectionView attackers = ai.getOpponent().getCreaturesInPlay();
+            CardCollectionView attackers = ComputerUtil.getOpponentFor(ai).getCreaturesInPlay();
             for (Card att : attackers) {
                 if (ComputerUtilCombat.canAttackNextTurn(att, ai)) {
-                    combat.addAttacker(att, att.getController().getOpponent());
+                    combat.addAttacker(att, ComputerUtil.getOpponentFor(att.getController()));
                 }
             }
             AiBlockController aiBlock = new AiBlockController(ai);
@@ -1101,7 +1102,7 @@ public class ComputerUtil {
         return (sa.getHostCard().isCreature()
                 && sa.getPayCosts().hasTapCost()
                 && (ph.getPhase().isBefore(PhaseType.COMBAT_DECLARE_BLOCKERS)
-                        || !ph.getNextTurn().equals(sa.getActivatingPlayer()))
+                        && !ph.getNextTurn().equals(sa.getActivatingPlayer()))
                 && !sa.getHostCard().hasSVar("EndOfTurnLeavePlay")
                 && !sa.hasParam("ActivationPhases"));
     }
@@ -1145,7 +1146,7 @@ public class ComputerUtil {
         }
 
         // get all cards the human controls with AntiBuffedBy
-        final CardCollectionView antibuffed = ai.getOpponent().getCardsIn(ZoneType.Battlefield);
+        final CardCollectionView antibuffed = ComputerUtil.getOpponentFor(ai).getCardsIn(ZoneType.Battlefield);
         for (Card buffedcard : antibuffed) {
             if (buffedcard.hasSVar("AntiBuffedBy")) {
                 final String buffedby = buffedcard.getSVar("AntiBuffedBy");
@@ -1331,7 +1332,7 @@ public class ComputerUtil {
                 if (tgt == null) {
                     continue;
                 }
-                final Player enemy = ai.getOpponent();
+                final Player enemy = ComputerUtil.getOpponentFor(ai);
                 if (!sa.canTarget(enemy)) {
                     continue;
                 }
@@ -1436,17 +1437,26 @@ public class ComputerUtil {
             objects = canBeTargeted;
         }
 
-        if (saviourApi == ApiType.Pump || saviourApi == ApiType.PumpAll) {
+        SpellAbility saviorWithSubs = saviour;
-            toughness = saviour.hasParam("NumDef") ? 
+        ApiType saviorWithSubsApi = saviorWithSubs == null ? null : saviorWithSubs.getApi();
-                    AbilityUtils.calculateAmount(saviour.getHostCard(), saviour.getParam("NumDef"), saviour) : 0;
+        while (saviorWithSubs != null) {
-            final List<String> keywords = saviour.hasParam("KW") ? 
+            ApiType curApi = saviorWithSubs.getApi();
-                            Arrays.asList(saviour.getParam("KW").split(" & ")) : new ArrayList<String>();
+            if (curApi == ApiType.Pump || curApi == ApiType.PumpAll) {
-            if (keywords.contains("Indestructible")) {
+                toughness = saviorWithSubs.hasParam("NumDef") ?
-                grantIndestructible = true;
+                        AbilityUtils.calculateAmount(saviorWithSubs.getHostCard(), saviorWithSubs.getParam("NumDef"), saviour) : 0;
-            }
+                final List<String> keywords = saviorWithSubs.hasParam("KW") ?
-            if (keywords.contains("Hexproof") || keywords.contains("Shroud")) {
+                        Arrays.asList(saviorWithSubs.getParam("KW").split(" & ")) : new ArrayList<String>();
-                grantShroud = true;
+                if (keywords.contains("Indestructible")) {
+                    grantIndestructible = true;
+                }
+                if (keywords.contains("Hexproof") || keywords.contains("Shroud")) {
+                    grantShroud = true;
+                }
+                break;
             }
+            // Consider pump in subabilities, e.g. Bristling Hydra hexproof subability
+            saviorWithSubs = saviorWithSubs.getSubAbility();
+
         }
 
         if (saviourApi == ApiType.PutCounter || saviourApi == ApiType.PutCounterAll) {
@@ -1590,7 +1600,8 @@ public class ComputerUtil {
                 && (((saviourApi == ApiType.Regenerate || saviourApi == ApiType.RegenerateAll)
                         && !topStack.hasParam("NoRegen")) || saviourApi == ApiType.ChangeZone
                         || saviourApi == ApiType.Pump || saviourApi == ApiType.PumpAll
-                        || saviourApi == ApiType.Protection || saviourApi == null)) {
+                        || saviourApi == ApiType.Protection || saviourApi == null
+                        || saviorWithSubsApi == ApiType.Pump || saviorWithSubsApi == ApiType.PumpAll)) {
             for (final Object o : objects) {
                 if (o instanceof Card) {
                     final Card c = (Card) o;
@@ -1604,7 +1615,9 @@ public class ComputerUtil {
                         continue;
                     }
 
-                    if (saviourApi == ApiType.Pump || saviourApi == ApiType.PumpAll) {
+                    if (saviourApi == ApiType.Pump || saviourApi == ApiType.PumpAll
+                            || saviorWithSubsApi == ApiType.Pump
+                            || saviorWithSubsApi == ApiType.PumpAll) {
                         if ((tgt == null && !grantIndestructible)
                                 || (!grantShroud && !grantIndestructible)) {
                             continue;
@@ -1857,6 +1870,27 @@ public class ComputerUtil {
     public static boolean scryWillMoveCardToBottomOfLibrary(Player player, Card c) {
         boolean bottom = false;
 
+        // AI profile-based toggles
+        int maxLandsToScryLandsToTop = 3;
+        int minLandsToScryLandsAway = 8;
+        int minCreatsToScryCreatsAway = 5;
+        int minCreatEvalThreshold = 160; // just a bit higher than a baseline 2/2 creature or a 1/1 mana dork
+        int lowCMCThreshold = 3;
+        int maxCreatsToScryLowCMCAway = 3;
+        boolean uncastablesToBottom = false;
+        int uncastableCMCThreshold = 1;
+        if (player.getController().isAI()) {
+            AiController aic = ((PlayerControllerAi)player.getController()).getAi();
+            maxLandsToScryLandsToTop = aic.getIntProperty(AiProps.SCRY_NUM_LANDS_TO_STILL_NEED_MORE);
+            minLandsToScryLandsAway = aic.getIntProperty(AiProps.SCRY_NUM_LANDS_TO_NOT_NEED_MORE);
+            minCreatsToScryCreatsAway = aic.getIntProperty(AiProps.SCRY_NUM_CREATURES_TO_NOT_NEED_SUBPAR_ONES);
+            minCreatEvalThreshold = aic.getIntProperty(AiProps.SCRY_EVALTHR_TO_SCRY_AWAY_LOWCMC_CREATURE);
+            lowCMCThreshold = aic.getIntProperty(AiProps.SCRY_EVALTHR_CMC_THRESHOLD);
+            maxCreatsToScryLowCMCAway = aic.getIntProperty(AiProps.SCRY_EVALTHR_CREATCOUNT_TO_SCRY_AWAY_LOWCMC);
+            uncastablesToBottom = aic.getBooleanProperty(AiProps.SCRY_IMMEDIATELY_UNCASTABLE_TO_BOTTOM);
+            uncastableCMCThreshold = aic.getIntProperty(AiProps.SCRY_IMMEDIATELY_UNCASTABLE_CMC_DIFF);
+        }
+
         CardCollectionView allCards = player.getAllCards();
         CardCollectionView cardsInHand = player.getCardsIn(ZoneType.Hand);
         CardCollectionView cardsOTB = player.getCardsIn(ZoneType.Battlefield);
@@ -1871,8 +1905,9 @@ public class ComputerUtil {
         CardCollectionView allCreatures = CardLists.filter(allCards, Predicates.and(CardPredicates.Presets.CREATURES, CardPredicates.isOwner(player)));
         int numCards = allCreatures.size();
 
-        if (landsOTB.size() < 3 && landsInHand.isEmpty()) {
+        if (landsOTB.size() < maxLandsToScryLandsToTop && landsInHand.isEmpty()) {
-            if ((!c.isLand() && !manaArts.contains(c.getName())) || c.getManaAbilities().isEmpty()) {
+            if ((!c.isLand() && !manaArts.contains(c.getName()))
+                    || (c.getManaAbilities().isEmpty() && !c.hasABasicLandType())) {
                 // scry away non-lands and non-manaproducing lands in situations when the land count
                 // on the battlefield is low, to try to improve the mana base early
                 bottom = true;
@@ -1880,7 +1915,7 @@ public class ComputerUtil {
         }
 
         if (c.isLand()) {
-            if (landsOTB.size() >= 8) {
+            if (landsOTB.size() >= minLandsToScryLandsAway) {
                 // probably enough lands not to urgently need another one, so look for more gas instead
                 bottom = true;
             } else if (landsInHand.size() >= Math.max(cardsInHand.size() / 2, 2)) {
@@ -1898,16 +1933,15 @@ public class ComputerUtil {
         } else if (c.isCreature()) {
             CardCollection creaturesOTB = CardLists.filter(cardsOTB, CardPredicates.Presets.CREATURES);
             int avgCreatureValue = numCards != 0 ? ComputerUtilCard.evaluateCreatureList(allCreatures) / numCards : 0;
-            int minCreatEvalThreshold = 160; // just a bit higher than a baseline 2/2 creature or a 1/1 mana dork
             int maxControlledCMC = Aggregates.max(creaturesOTB, CardPredicates.Accessors.fnGetCmc);
 
             if (ComputerUtilCard.evaluateCreature(c) < avgCreatureValue) {
-                if (creaturesOTB.size() > 5) {
+                if (creaturesOTB.size() > minCreatsToScryCreatsAway) {
                     // if there are more than five creatures and the creature is question is below average for
                     // the deck, scry it to the bottom
                     bottom = true;
-                } else if (creaturesOTB.size() > 3 && c.getCMC() <= 3
+                } else if (creaturesOTB.size() > maxCreatsToScryLowCMCAway && c.getCMC() <= lowCMCThreshold
-                        && maxControlledCMC >= 4 && ComputerUtilCard.evaluateCreature(c) <= minCreatEvalThreshold) {
+                        && maxControlledCMC >= lowCMCThreshold + 1 && ComputerUtilCard.evaluateCreature(c) <= minCreatEvalThreshold) {
                     // if we are already at a stage when we have 4+ CMC creatures on the battlefield,
                     // probably worth it to scry away very low value creatures with low CMC
                     bottom = true;
@@ -1915,6 +1949,15 @@ public class ComputerUtil {
             }
         }
 
+        if (uncastablesToBottom && !c.isLand()) {
+            int cmc = c.isSplitCard() ? Math.min(c.getCMC(Card.SplitCMCMode.LeftSplitCMC), c.getCMC(Card.SplitCMCMode.RightSplitCMC))
+                    : c.getCMC();
+            int maxCastable = ComputerUtilMana.getAvailableManaEstimate(player, false) + landsInHand.size();
+            if (cmc - maxCastable >= uncastableCMCThreshold) {
+                bottom = true;
+            }
+        }
+
         return bottom;
     }
 
@@ -2047,7 +2090,7 @@ public class ComputerUtil {
                     }
                 }
                 else if (logic.equals("ChosenLandwalk")) {
-                    for (Card c : ai.getOpponent().getLandsInPlay()) {
+                    for (Card c : ComputerUtil.getOpponentFor(ai).getLandsInPlay()) {
                         for (String t : c.getType()) {
                             if (!invalidTypes.contains(t) && CardType.isABasicLandType(t)) {
                                 chosen = t;
@@ -2065,7 +2108,7 @@ public class ComputerUtil {
         else if (kindOfType.equals("Land")) {
             if (logic != null) {
                 if (logic.equals("ChosenLandwalk")) {
-                    for (Card c : ai.getOpponent().getLandsInPlay()) {
+                    for (Card c : ComputerUtil.getOpponentFor(ai).getLandsInPlay()) {
                         for (String t : c.getType().getLandTypes()) {
                             if (!invalidTypes.contains(t)) {
                                 chosen = t;
@@ -2098,7 +2141,7 @@ public class ComputerUtil {
         case "Torture":
             return "Torture";
         case "GraceOrCondemnation":
-            return ai.getCreaturesInPlay().size() > ai.getOpponent().getCreaturesInPlay().size() ? "Grace"
+            return ai.getCreaturesInPlay().size() > ComputerUtil.getOpponentFor(ai).getCreaturesInPlay().size() ? "Grace"
                     : "Condemnation";
         case "CarnageOrHomage":
             CardCollection cardsInPlay = CardLists
@@ -2683,4 +2726,53 @@ public class ComputerUtil {
         }
         return true;
     }
+
+
+    @Deprecated
+    public static final Player getOpponentFor(final Player player) {
+        // This method is deprecated and currently functions as a synonym for player.getWeakestOpponent
+        // until it can be replaced everywhere in the code.
+
+        // Consider replacing calls to this method either with a multiplayer-friendly determination of
+        // opponent that contextually makes the most sense, or with a direct call to player.getWeakestOpponent
+        // where that is applicable and makes sense from the point of view of multiplayer AI logic.
+        Player opponent = player.getWeakestOpponent();
+        if (opponent != null) {
+            return opponent;
+        }
+
+        throw new IllegalStateException("No opponents left ingame for " + player);
+    }
+
+    public static int countUsefulCreatures(Player p) {
+        CardCollection creats = p.getCreaturesInPlay();
+        int count = 0;
+
+        for (Card c : creats) {
+            if (!ComputerUtilCard.isUselessCreature(p, c)) {
+                count ++;
+            }
+        }
+
+        return count;
+    }
+
+    public static boolean isPlayingReanimator(final Player ai) {
+        // TODO: either add SVars to other reanimator cards, or improve the prediction so that it avoids using a SVar
+        // at all but detects this effect from SA parameters (preferred, but difficult)
+        CardCollectionView inHand = ai.getCardsIn(ZoneType.Hand);
+        CardCollectionView inDeck = ai.getCardsIn(new ZoneType[] {ZoneType.Hand, ZoneType.Library});
+
+        Predicate<Card> markedAsReanimator = new Predicate<Card>() {
+            @Override
+            public boolean apply(Card card) {
+                return "true".equalsIgnoreCase(card.getSVar("IsReanimatorCard"));
+            }
+        };
+
+        int numInHand = CardLists.filter(inHand, markedAsReanimator).size();
+        int numInDeck = CardLists.filter(inDeck, markedAsReanimator).size();
+
+        return numInHand > 0 || numInDeck >= 3;
+    }
 }

forge-ai/src/main/java/forge/ai/ComputerUtilCard.java

@@ -1,22 +1,10 @@
 package forge.ai;
 
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.List;
-import java.util.Map;
-import java.util.Map.Entry;
-import java.util.Set;
-
-import org.apache.commons.lang3.StringUtils;
-import org.apache.commons.lang3.tuple.MutablePair;
-import org.apache.commons.lang3.tuple.Pair;
-
 import com.google.common.base.Predicate;
 import com.google.common.base.Predicates;
 import com.google.common.collect.Iterables;
+import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
-
 import forge.card.CardType;
 import forge.card.ColorSet;
 import forge.card.MagicColor;
@@ -29,15 +17,7 @@ import forge.game.GameObject;
 import forge.game.ability.AbilityFactory;
 import forge.game.ability.AbilityUtils;
 import forge.game.ability.ApiType;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
-import forge.game.card.CardCollectionView;
-import forge.game.card.CardFactory;
-import forge.game.card.CardFactoryUtil;
-import forge.game.card.CardLists;
-import forge.game.card.CardPredicates;
-import forge.game.card.CardUtil;
-import forge.game.card.CounterType;
 import forge.game.combat.Combat;
 import forge.game.combat.CombatUtil;
 import forge.game.cost.CostPayEnergy;
@@ -55,6 +35,12 @@ import forge.game.zone.ZoneType;
 import forge.item.PaperCard;
 import forge.util.Aggregates;
 import forge.util.MyRandom;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.lang3.tuple.MutablePair;
+import org.apache.commons.lang3.tuple.Pair;
+
+import java.util.*;
+import java.util.Map.Entry;
 
 
 public class ComputerUtilCard {
@@ -364,7 +350,12 @@ public class ComputerUtilCard {
         }
     
         if (hasEnchantmants || hasArtifacts) {
-            final List<Card> ae = CardLists.filter(list, Predicates.<Card>or(CardPredicates.Presets.ARTIFACTS, CardPredicates.Presets.ENCHANTMENTS));
+            final List<Card> ae = CardLists.filter(list, Predicates.and(Predicates.<Card>or(CardPredicates.Presets.ARTIFACTS, CardPredicates.Presets.ENCHANTMENTS), new Predicate<Card>() {
+                @Override
+                public boolean apply(Card card) {
+                    return !card.hasSVar("DoNotDiscardIfAble");
+                }
+            }));
             return getCheapestPermanentAI(ae, null, false);
         }
     
@@ -377,6 +368,32 @@ public class ComputerUtilCard {
         return getCheapestPermanentAI(list, null, false);
     }
 
+    public static final Card getCheapestSpellAI(final Iterable<Card> list) {
+        if (!Iterables.isEmpty(list)) {
+            CardCollection cc = CardLists.filter(new CardCollection(list),
+                    Predicates.or(CardPredicates.isType("Instant"), CardPredicates.isType("Sorcery")));
+            Collections.sort(cc, CardLists.CmcComparatorInv);
+
+            if (cc.isEmpty()) {
+                return null;
+            }
+
+            Card cheapest = cc.getLast();
+            if (cheapest.hasSVar("DoNotDiscardIfAble")) {
+                for (int i = cc.size() - 1; i >= 0; i--) {
+                    if (!cc.get(i).hasSVar("DoNotDiscardIfAble")) {
+                        cheapest = cc.get(i);
+                        break;
+                    }
+                }
+            }
+
+            return cheapest;
+        }
+
+        return null;
+    }
+
     public static final Comparator<Card> EvaluateCreatureComparator = new Comparator<Card>() {
         @Override
         public int compare(final Card a, final Card b) {
@@ -399,6 +416,10 @@ public class ComputerUtilCard {
         return creatureEvaluator.evaluateCreature(c);
     }
 
+    public static int evaluateCreature(final Card c, final boolean considerPT, final boolean considerCMC) {
+        return creatureEvaluator.evaluateCreature(c, considerPT, considerCMC);
+    }
+
     public static int evaluatePermanentList(final CardCollectionView list) {
         int value = 0;
         for (int i = 0; i < list.size(); i++) {
@@ -482,7 +503,7 @@ public class ComputerUtilCard {
      */
     public static CardCollectionView getLikelyBlockers(final Player ai, final CardCollectionView blockers) {
         AiBlockController aiBlk = new AiBlockController(ai);
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
         Combat combat = new Combat(opp);
         //Use actual attackers if available, else consider all possible attackers
         Combat currentCombat = ai.getGame().getCombat();
@@ -845,9 +866,10 @@ public class ComputerUtilCard {
         List<String> chosen = new ArrayList<String>();
         Player ai = sa.getActivatingPlayer();
         final Game game = ai.getGame();
-        Player opp = ai.getOpponent();
+        Player opp = ComputerUtil.getOpponentFor(ai);
         if (sa.hasParam("AILogic")) {
             final String logic = sa.getParam("AILogic");
+             
             if (logic.equals("MostProminentInHumanDeck")) {
                 chosen.add(ComputerUtilCard.getMostProminentColor(CardLists.filterControlledBy(game.getCardsInGame(), opp), colorChoices));
             }
@@ -873,7 +895,7 @@ public class ComputerUtilCard {
                 chosen.add(ComputerUtilCard.getMostProminentColor(ai.getCardsIn(ZoneType.Battlefield), colorChoices));
             }
             else if (logic.equals("MostProminentHumanControls")) {
-                chosen.add(ComputerUtilCard.getMostProminentColor(ai.getOpponent().getCardsIn(ZoneType.Battlefield), colorChoices));
+                chosen.add(ComputerUtilCard.getMostProminentColor(opp.getCardsIn(ZoneType.Battlefield), colorChoices));
             }
             else if (logic.equals("MostProminentPermanent")) {
                 chosen.add(ComputerUtilCard.getMostProminentColor(game.getCardsIn(ZoneType.Battlefield), colorChoices));
@@ -897,7 +919,7 @@ public class ComputerUtilCard {
             	String bestColor = Constant.GREEN;
             	for (byte color : MagicColor.WUBRG) {
             		CardCollectionView ailist = ai.getCardsIn(ZoneType.Battlefield);
-            		CardCollectionView opplist = ai.getOpponent().getCardsIn(ZoneType.Battlefield);
+            		CardCollectionView opplist = opp.getCardsIn(ZoneType.Battlefield);
             		
             		ailist = CardLists.filter(ailist, CardPredicates.isColor(color));
             		opplist = CardLists.filter(opplist, CardPredicates.isColor(color));
@@ -934,7 +956,7 @@ public class ComputerUtilCard {
     public static boolean useRemovalNow(final SpellAbility sa, final Card c, final int dmg, ZoneType destination) {
         final Player ai = sa.getActivatingPlayer();
         final AiController aic = ((PlayerControllerAi)ai.getController()).getAi();
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
         final Game game = ai.getGame();
         final PhaseHandler ph = game.getPhaseHandler();
         final PhaseType phaseType = ph.getPhase();
@@ -1174,6 +1196,18 @@ public class ComputerUtilCard {
         final PhaseHandler phase = game.getPhaseHandler();
         final Combat combat = phase.getCombat();
         final boolean isBerserk = "Berserk".equals(sa.getParam("AILogic"));
+        final boolean loseCardAtEOT = "Sacrifice".equals(sa.getParam("AtEOT")) || "Exile".equals(sa.getParam("AtEOT"))
+                || "Destroy".equals(sa.getParam("AtEOT")) || "ExileCombat".equals(sa.getParam("AtEOT"));
+
+        boolean combatTrick = false;
+        boolean holdCombatTricks = false;
+        int chanceToHoldCombatTricks = -1;
+
+        if (ai.getController().isAI()) {
+            AiController aic = ((PlayerControllerAi)ai.getController()).getAi();
+            holdCombatTricks = aic.getBooleanProperty(AiProps.TRY_TO_HOLD_COMBAT_TRICKS_UNTIL_BLOCK);
+            chanceToHoldCombatTricks = aic.getIntProperty(AiProps.CHANCE_TO_HOLD_COMBAT_TRICKS_UNTIL_BLOCK);
+        }
         
         if (!c.canBeTargetedBy(sa)) {
             return false;
@@ -1186,11 +1220,11 @@ public class ComputerUtilCard {
         /* -- currently disabled until better conditions are devised and the spell prediction is made smarter --
         // Determine if some mana sources need to be held for the future spell to cast in Main 2 before determining whether to pump.
         AiController aic = ((PlayerControllerAi)ai.getController()).getAi();
-        if (aic.getCardMemory().isMemorySetEmpty(AiCardMemory.MemorySet.HELD_MANA_SOURCES)) {
+        if (aic.getCardMemory().isMemorySetEmpty(AiCardMemory.MemorySet.HELD_MANA_SOURCES_FOR_MAIN2)) {
             // only hold mana sources once
             SpellAbility futureSpell = aic.predictSpellToCastInMain2(ApiType.Pump);
             if (futureSpell != null && futureSpell.getHostCard() != null) {
-                aic.reserveManaSourcesForMain2(futureSpell);
+                aic.reserveManaSources(futureSpell);
             }
         }
         */
@@ -1204,8 +1238,8 @@ public class ComputerUtilCard {
             return true;
         }
 
-        // buff attacker/blocker using triggered pump
+        // buff attacker/blocker using triggered pump (unless it's lethal and we don't want to be reckless)
-        if (immediately && phase.getPhase().isBefore(PhaseType.COMBAT_DECLARE_ATTACKERS)) {
+        if (immediately && phase.getPhase().isBefore(PhaseType.COMBAT_DECLARE_ATTACKERS) && !loseCardAtEOT) {
             if (phase.isPlayerTurn(ai)) {
                 if (CombatUtil.canAttack(c)) {
                     return true;
@@ -1217,7 +1251,7 @@ public class ComputerUtilCard {
             }
         }
 
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
         Card pumped = getPumpedCreature(ai, sa, c, toughness, power, keywords);
         List<Card> oppCreatures = opp.getCreaturesInPlay();
         float chance = 0;
@@ -1234,6 +1268,28 @@ public class ComputerUtilCard {
                     threat *= 4;    //over-value self +attack for 0 power creatures which may be pumped further after attacking 
                 }
                 chance += threat;
+
+                // -- Hold combat trick (the AI will try to delay the pump until Declare Blockers) --
+                // Enable combat trick mode only in case it's a pure buff spell in hand with no keywords or with Trample,
+                // First Strike, or Double Strike, otherwise the AI is unlikely to cast it or it's too late to
+                // cast it during Declare Blockers, thus ruining its attacker
+                if (holdCombatTricks && sa.getApi() == ApiType.Pump
+                        && sa.hasParam("NumAtt") && sa.getHostCard() != null
+                        && sa.getHostCard().getZone() != null && sa.getHostCard().getZone().is(ZoneType.Hand)
+                        && c.getNetPower() > 0 // too obvious if attacking with a 0-power creature
+                        && sa.getHostCard().isInstant() // only do it for instant speed spells in hand
+                        && ComputerUtilMana.hasEnoughManaSourcesToCast(sa, ai)) {
+                    combatTrick = true;
+
+                    final List<String> kws = sa.hasParam("KW") ? Arrays.asList(sa.getParam("KW").split(" & "))
+                            : Lists.<String>newArrayList();
+                    for (String kw : kws) {
+                        if (!kw.equals("Trample") && !kw.equals("First Strike") && !kw.equals("Double Strike")) {
+                            combatTrick = false;
+                            break;
+                        }
+                    }
+                }
             }
             
             //2. grant haste
@@ -1261,7 +1317,7 @@ public class ComputerUtilCard {
             boolean pumpedWillDie = false;
             final boolean isAttacking = combat.isAttacking(c);
 
-            if (isBerserk && isAttacking) { pumpedWillDie = true; }
+            if ((isBerserk && isAttacking) || loseCardAtEOT) { pumpedWillDie = true; }
 
             if (isAttacking) {
                 pumpedCombat.addAttacker(pumped, opp);
@@ -1319,6 +1375,16 @@ public class ComputerUtilCard {
             if (combat.isAttacking(c) && opp.getLife() > 0) {
                 int dmg = ComputerUtilCombat.damageIfUnblocked(c, opp, combat, true);
                 int pumpedDmg = ComputerUtilCombat.damageIfUnblocked(pumped, opp, pumpedCombat, true);
+                int poisonOrig = opp.canReceiveCounters(CounterType.POISON) ? ComputerUtilCombat.poisonIfUnblocked(c, ai) : 0;
+                int poisonPumped = opp.canReceiveCounters(CounterType.POISON) ? ComputerUtilCombat.poisonIfUnblocked(pumped, ai) : 0;
+
+                // predict Infect
+                if (pumpedDmg == 0 && c.hasKeyword("Infect")) {
+                    if (poisonPumped > poisonOrig) {
+                        pumpedDmg = poisonPumped;
+                    }
+                }
+
                 if (combat.isBlocked(c)) {
                     if (!c.hasKeyword("Trample")) {
                         dmg = 0;
@@ -1331,8 +1397,11 @@ public class ComputerUtilCard {
                         pumpedDmg = 0;
                     }
                 }
-                if (pumpedDmg >= opp.getLife()) {
+                if (pumpedDmg > dmg) {
-                    return true;
+                    if ((!c.hasKeyword("Infect") && pumpedDmg >= opp.getLife())
+                            || (c.hasKeyword("Infect") && opp.canReceiveCounters(CounterType.POISON) && pumpedDmg >= opp.getPoisonCounters())) {
+                        return true;
+                    }
                 }
                 // try to determine if pumping a creature for more power will give lethal on board
                 // considering all unblocked creatures after the blockers are already declared
@@ -1403,6 +1472,37 @@ public class ComputerUtilCard {
             }
         }
 
+        boolean wantToHoldTrick = holdCombatTricks;
+        if (chanceToHoldCombatTricks >= 0) {
+            // Obey the chance specified in the AI profile for holding combat tricks
+            wantToHoldTrick &= MyRandom.percentTrue(chanceToHoldCombatTricks);
+        } else {
+            // Use standard considerations dependent solely on the buff chance determined above
+            wantToHoldTrick &= MyRandom.getRandom().nextFloat() < chance;
+        }
+
+        boolean isHeldCombatTrick = combatTrick && wantToHoldTrick;
+
+        if (isHeldCombatTrick) {
+           if (AiCardMemory.isMemorySetEmpty(ai, AiCardMemory.MemorySet.TRICK_ATTACKERS)) {
+               // Attempt to hold combat tricks until blockers are declared, and try to lure the opponent into blocking
+               // (The AI will only do it for one attacker at the moment, otherwise it risks running his attackers into
+               // an army of opposing blockers with only one combat trick in hand)
+               AiCardMemory.rememberCard(ai, c, AiCardMemory.MemorySet.MANDATORY_ATTACKERS);
+               AiCardMemory.rememberCard(ai, c, AiCardMemory.MemorySet.TRICK_ATTACKERS);
+               // Reserve the mana until Declare Blockers such that the AI doesn't tap out before having a chance to use
+               // the combat trick
+               if (ai.getController().isAI()) {
+                   ((PlayerControllerAi) ai.getController()).getAi().reserveManaSources(sa, PhaseType.COMBAT_DECLARE_BLOCKERS);
+               }
+               return false;
+           } else {
+               // Don't try to mix "lure" and "precast" paradigms for combat tricks, since that creates issues with
+               // the AI overextending the attack
+               return false;
+           }
+        }
+
         return MyRandom.getRandom().nextFloat() < chance;
     }
     
@@ -1417,8 +1517,7 @@ public class ComputerUtilCard {
      * @return
      */
     public static Card getPumpedCreature(final Player ai, final SpellAbility sa,
-            final Card c, final int toughness, final int power,
+            final Card c, int toughness, int power, final List<String> keywords) {
-            final List<String> keywords) {
         Card pumped = CardFactory.copyCard(c, true);
         pumped.setSickness(c.hasSickness());
         final long timestamp = c.getGame().getNextTimestamp();
@@ -1431,9 +1530,19 @@ public class ComputerUtilCard {
             }
         }
 
+        // Berserk
         final boolean isBerserk = "Berserk".equals(sa.getParam("AILogic"));
         final int berserkPower = isBerserk ? c.getCurrentPower() : 0;
 
+        // Electrostatic Pummeler
+        for (SpellAbility ab : c.getSpellAbilities()) {
+            if ("Pummeler".equals(ab.getParam("AILogic"))) {
+                Pair<Integer, Integer> newPT = SpecialCardAi.ElectrostaticPummeler.getPumpedPT(ai, power, toughness);
+                power = newPT.getLeft();
+                toughness = newPT.getRight();
+            }
+        }
+
         pumped.addNewPT(c.getCurrentPower(), c.getCurrentToughness(), timestamp);
         pumped.addTempPowerBoost(c.getTempPowerBoost() + power + berserkPower);
         pumped.addTempToughnessBoost(c.getTempToughnessBoost() + toughness);

forge-ai/src/main/java/forge/ai/ComputerUtilCombat.java

@@ -17,14 +17,10 @@
  */
 package forge.ai;
 
-import java.util.List;
-import java.util.Map;
-
 import com.google.common.base.Predicate;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
-
 import forge.game.CardTraitBase;
 import forge.game.Game;
 import forge.game.GameEntity;
@@ -32,13 +28,7 @@ import forge.game.GlobalRuleChange;
 import forge.game.ability.AbilityFactory;
 import forge.game.ability.AbilityUtils;
 import forge.game.ability.ApiType;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
-import forge.game.card.CardCollectionView;
-import forge.game.card.CardFactoryUtil;
-import forge.game.card.CardLists;
-import forge.game.card.CardUtil;
-import forge.game.card.CounterType;
 import forge.game.combat.Combat;
 import forge.game.combat.CombatUtil;
 import forge.game.cost.CostPayment;
@@ -53,8 +43,12 @@ import forge.game.trigger.Trigger;
 import forge.game.trigger.TriggerHandler;
 import forge.game.trigger.TriggerType;
 import forge.game.zone.ZoneType;
+import forge.util.TextUtil;
 import forge.util.collect.FCollection;
 
+import java.util.List;
+import java.util.Map;
+
 
 /**
  * <p>
@@ -390,6 +384,18 @@ public class ComputerUtilCombat {
             return false;
         }
 
+        CardCollectionView otb = ai.getCardsIn(ZoneType.Battlefield);
+        // Special cases:
+        // AI can't lose in combat in presence of Worship (with creatures)
+        if (!CardLists.filter(otb, CardPredicates.nameEquals("Worship")).isEmpty() && !ai.getCreaturesInPlay().isEmpty()) {
+            return false;
+        }
+        // AI can't lose in combat in presence of Elderscale Wurm (at 7 life or more)
+        if (!CardLists.filter(otb, CardPredicates.nameEquals("Elderscale Wurm")).isEmpty() && ai.getLife() >= 7) {
+            return false;
+        }
+
+
         // check for creatures that must be blocked
         final List<Card> attackers = combat.getAttackersOf(ai);
         
@@ -401,7 +407,11 @@ public class ComputerUtilCombat {
 
             if (blockers.isEmpty()) {
                 if (!attacker.getSVar("MustBeBlocked").equals("")) {
-                    return true;
+                    boolean cond = !"attackingplayer".equalsIgnoreCase(attacker.getSVar("MustBeBlocked"))
+                            || combat.getDefenderByAttacker(attacker) instanceof Player;
+                    if (cond) {
+                        return true;
+                    }
                 }
             }
             if (threateningCommanders.contains(attacker)) {
@@ -683,12 +693,21 @@ public class ComputerUtilCombat {
      */
     public static boolean attackerWouldBeDestroyed(Player ai, final Card attacker, Combat combat) {
         final List<Card> blockers = combat.getBlockers(attacker);
+        int firstStrikeBlockerDmg = 0;
 
         for (final Card defender : blockers) {
             if (ComputerUtilCombat.canDestroyAttacker(ai, attacker, defender, combat, true)
                     && !(defender.hasKeyword("Wither") || defender.hasKeyword("Infect"))) {
                 return true;
             }
+            if (defender.hasKeyword("First Strike") || defender.hasKeyword("Double Strike")) {
+                firstStrikeBlockerDmg += defender.getNetCombatDamage();
+            }
+        }
+
+        // Consider first strike and double strike
+        if (attacker.hasKeyword("First Strike") || attacker.hasKeyword("Double Strike")) {
+            return firstStrikeBlockerDmg >= ComputerUtilCombat.getDamageToKill(attacker);
         }
 
         return ComputerUtilCombat.totalDamageOfBlockers(attacker, blockers) >= ComputerUtilCombat.getDamageToKill(attacker);
@@ -781,7 +800,7 @@ public class ComputerUtilCombat {
                 if (validBlocked.contains(".withLesserPower")) {
                     // Have to check this restriction here as triggering objects aren't set yet, so
                     // ValidBlocked$Creature.powerLTX where X:TriggeredBlocker$CardPower crashes with NPE
-                    validBlocked = validBlocked.replace(".withLesserPower", "");
+                    validBlocked = TextUtil.fastReplace(validBlocked, ".withLesserPower", "");
                     if (defender.getCurrentPower() <= attacker.getCurrentPower()) {
                         return false;
                     }
@@ -795,7 +814,7 @@ public class ComputerUtilCombat {
                 if (validBlocker.contains(".withLesserPower")) {
                     // Have to check this restriction here as triggering objects aren't set yet, so
                     // ValidCard$Creature.powerLTX where X:TriggeredAttacker$CardPower crashes with NPE
-                    validBlocker = validBlocker.replace(".withLesserPower", "");
+                    validBlocker = TextUtil.fastReplace(validBlocker, ".withLesserPower", "");
                     if (defender.getCurrentPower() >= attacker.getCurrentPower()) {
                         return false;
                     }
@@ -854,9 +873,12 @@ public class ComputerUtilCombat {
     public static int predictPowerBonusOfBlocker(final Card attacker, final Card blocker, boolean withoutAbilities) {
         int power = 0;
 
+        // Apparently, Flanking is predicted below from a trigger, so using the code below results in double
+        // application of power bonus. A bit more testing may be needed though, so commenting out for now.
+        /*
         if (attacker.hasKeyword("Flanking") && !blocker.hasKeyword("Flanking")) {
             power -= attacker.getAmountOfKeyword("Flanking");
-        }
+        }*/
         
         // Serene Master switches power with attacker
         if (blocker.getName().equals("Serene Master")) {
@@ -874,7 +896,7 @@ public class ComputerUtilCombat {
             power -= attacker.getNetCombatDamage();
         }
 
-        power += blocker.getKeywordMagnitude("Bushido");
+        // power += blocker.getKeywordMagnitude("Bushido"); // This is apparently accounted for in the combat trigs below
 
         final Game game = attacker.getGame();
         // look out for continuous static abilities that only care for blocking
@@ -889,7 +911,7 @@ public class ComputerUtilCombat {
                 if (!params.containsKey("Affected") || !params.get("Affected").contains("blocking")) {
                     continue;
                 }
-                final String valid = params.get("Affected").replace("blocking", "Creature");
+                final String valid = TextUtil.fastReplace(params.get("Affected"), "blocking", "Creature");
                 if (!blocker.isValid(valid, card.getController(), card, null)) {
                     continue;
                 }
@@ -1024,7 +1046,7 @@ public class ComputerUtilCombat {
             toughness += attacker.getNetToughness() - blocker.getNetToughness();
         } 
 
-        toughness += blocker.getKeywordMagnitude("Bushido");
+        // toughness += blocker.getKeywordMagnitude("Bushido"); // Apparently, this is already accounted for in the combat triggers below
         final Game game = attacker.getGame();
         final FCollection<Trigger> theTriggers = new FCollection<Trigger>();
         for (Card card : game.getCardsIn(ZoneType.Battlefield)) {
@@ -1176,10 +1198,13 @@ public class ComputerUtilCombat {
      *            a {@link forge.game.combat.Combat} object.
      * @return a int.
      */
-    public static int predictPowerBonusOfAttacker(final Card attacker, final Card blocker, final Combat combat , boolean withoutAbilities) {
+    public static int predictPowerBonusOfAttacker(final Card attacker, final Card blocker, final Combat combat, boolean withoutAbilities) {
+        return predictPowerBonusOfAttacker(attacker, blocker, combat, withoutAbilities, false);
+    }
+    public static int predictPowerBonusOfAttacker(final Card attacker, final Card blocker, final Combat combat, boolean withoutAbilities, boolean withoutCombatStaticAbilities) {
         int power = 0;
 
-        power += attacker.getKeywordMagnitude("Bushido");
+        // power += attacker.getKeywordMagnitude("Bushido"); // This is apparently accounted for in the combat trigs below
         //check Exalted only for the first attacker
         if (combat != null && combat.getAttackers().isEmpty()) {
             for (Card card : attacker.getController().getCardsIn(ZoneType.Battlefield)) {
@@ -1216,27 +1241,29 @@ public class ComputerUtilCombat {
 
         // look out for continuous static abilities that only care for attacking
         // creatures
-        final CardCollectionView cardList = CardCollection.combine(game.getCardsIn(ZoneType.Battlefield), game.getCardsIn(ZoneType.Command));
+        if (!withoutCombatStaticAbilities) {
-        for (final Card card : cardList) {
+            final CardCollectionView cardList = CardCollection.combine(game.getCardsIn(ZoneType.Battlefield), game.getCardsIn(ZoneType.Command));
-            for (final StaticAbility stAb : card.getStaticAbilities()) {
+            for (final Card card : cardList) {
-                final Map<String, String> params = stAb.getMapParams();
+                for (final StaticAbility stAb : card.getStaticAbilities()) {
-                if (!params.get("Mode").equals("Continuous")) {
+                    final Map<String, String> params = stAb.getMapParams();
-                    continue;
+                    if (!params.get("Mode").equals("Continuous")) {
-                }
+                        continue;
-                if (!params.containsKey("Affected") || !params.get("Affected").contains("attacking")) {
+                    }
-                    continue;
+                    if (!params.containsKey("Affected") || !params.get("Affected").contains("attacking")) {
-                }
+                        continue;
-                final String valid = params.get("Affected").replace("attacking", "Creature");
+                    }
-                if (!attacker.isValid(valid, card.getController(), card, null)) {
+                    final String valid = TextUtil.fastReplace(params.get("Affected"), "attacking", "Creature");
-                    continue;
+                    if (!attacker.isValid(valid, card.getController(), card, null)) {
-                }
+                        continue;
-                if (params.containsKey("AddPower")) {
+                    }
-                    if (params.get("AddPower").equals("X")) {
+                    if (params.containsKey("AddPower")) {
-                        power += CardFactoryUtil.xCount(card, card.getSVar("X"));
+                        if (params.get("AddPower").equals("X")) {
-                    } else if (params.get("AddPower").equals("Y")) {
+                            power += CardFactoryUtil.xCount(card, card.getSVar("X"));
-                        power += CardFactoryUtil.xCount(card, card.getSVar("Y"));
+                        } else if (params.get("AddPower").equals("Y")) {
-                    } else {
+                            power += CardFactoryUtil.xCount(card, card.getSVar("Y"));
-                        power += Integer.valueOf(params.get("AddPower"));
+                        } else {
+                            power += Integer.valueOf(params.get("AddPower"));
+                        }
                     }
                 }
             }
@@ -1305,9 +1332,13 @@ public class ComputerUtilCombat {
             } else {
                 String bonus = new String(source.getSVar(att));
                 if (bonus.contains("TriggerCount$NumBlockers")) {
-                    bonus = bonus.replace("TriggerCount$NumBlockers", "Number$1");
+                    bonus = TextUtil.fastReplace(bonus, "TriggerCount$NumBlockers", "Number$1");
                 } else if (bonus.contains("TriggeredPlayersDefenders$Amount")) { // for Melee
-                    bonus = bonus.replace("TriggeredPlayersDefenders$Amount", "Number$1");
+                    bonus = TextUtil.fastReplace(bonus, "TriggeredPlayersDefenders$Amount", "Number$1");
+                } else if (bonus.contains("TriggeredAttacker$CardPower")) { // e.g. Arahbo, Roar of the World
+                    bonus = TextUtil.fastReplace(bonus, "TriggeredAttacker$CardPower", TextUtil.concatNoSpace("Number$", String.valueOf(attacker.getNetPower())));
+                } else if (bonus.contains("TriggeredAttacker$CardToughness")) {
+                    bonus = TextUtil.fastReplace(bonus, "TriggeredAttacker$CardToughness", TextUtil.concatNoSpace("Number$", String.valueOf(attacker.getNetToughness())));
                 }
                 power += CardFactoryUtil.xCount(source, bonus);
 
@@ -1372,6 +1403,10 @@ public class ComputerUtilCombat {
      */
     public static int predictToughnessBonusOfAttacker(final Card attacker, final Card blocker, final Combat combat
             , boolean withoutAbilities) {
+        return predictToughnessBonusOfAttacker(attacker, blocker, combat, withoutAbilities, false);
+    }
+    public static int predictToughnessBonusOfAttacker(final Card attacker, final Card blocker, final Combat combat
+            , boolean withoutAbilities, boolean withoutCombatStaticAbilities) {
         int toughness = 0;
 
         //check Exalted only for the first attacker
@@ -1394,43 +1429,45 @@ public class ComputerUtilCombat {
             theTriggers.addAll(card.getTriggers());
         }
         if (blocker != null) {
-            toughness += attacker.getKeywordMagnitude("Bushido");
+            // toughness += attacker.getKeywordMagnitude("Bushido"); // This is apparently accounted for in the combat trigs below
             theTriggers.addAll(blocker.getTriggers());
         }
 
         // look out for continuous static abilities that only care for attacking
         // creatures
-        final CardCollectionView cardList = game.getCardsIn(ZoneType.Battlefield);
+        if (!withoutCombatStaticAbilities) {
-        for (final Card card : cardList) {
+            final CardCollectionView cardList = game.getCardsIn(ZoneType.Battlefield);
-            for (final StaticAbility stAb : card.getStaticAbilities()) {
+            for (final Card card : cardList) {
-                final Map<String, String> params = stAb.getMapParams();
+                for (final StaticAbility stAb : card.getStaticAbilities()) {
-                if (!params.get("Mode").equals("Continuous")) {
+                    final Map<String, String> params = stAb.getMapParams();
-                    continue;
+                    if (!params.get("Mode").equals("Continuous")) {
-                }
+                        continue;
-                if (params.containsKey("Affected") && params.get("Affected").contains("attacking")) {
+                    }
-	                final String valid = params.get("Affected").replace("attacking", "Creature");
+                    if (params.containsKey("Affected") && params.get("Affected").contains("attacking")) {
-	                if (!attacker.isValid(valid, card.getController(), card, null)) {
+                        final String valid = TextUtil.fastReplace(params.get("Affected"), "attacking", "Creature");
-	                    continue;
+                        if (!attacker.isValid(valid, card.getController(), card, null)) {
-	                }
+                            continue;
-	                if (params.containsKey("AddToughness")) {
+                        }
-	                    if (params.get("AddToughness").equals("X")) {
+                        if (params.containsKey("AddToughness")) {
-	                        toughness += CardFactoryUtil.xCount(card, card.getSVar("X"));
+                            if (params.get("AddToughness").equals("X")) {
-	                    } else if (params.get("AddToughness").equals("Y")) {
+                                toughness += CardFactoryUtil.xCount(card, card.getSVar("X"));
-	                        toughness += CardFactoryUtil.xCount(card, card.getSVar("Y"));
+                            } else if (params.get("AddToughness").equals("Y")) {
-	                    } else {
+                                toughness += CardFactoryUtil.xCount(card, card.getSVar("Y"));
-	                        toughness += Integer.valueOf(params.get("AddToughness"));
+                            } else {
-	                    }
+                                toughness += Integer.valueOf(params.get("AddToughness"));
-	                }
+                            }
-                } else if (params.containsKey("Affected") && params.get("Affected").contains("untapped")) {
+                        }
-	                final String valid = params.get("Affected").replace("untapped", "Creature");
+                    } else if (params.containsKey("Affected") && params.get("Affected").contains("untapped")) {
-	                if (!attacker.isValid(valid, card.getController(), card, null) 
+                        final String valid = TextUtil.fastReplace(params.get("Affected"), "untapped", "Creature");
-	                		|| attacker.hasKeyword("Vigilance")) {
+                        if (!attacker.isValid(valid, card.getController(), card, null)
-	                    continue;
+                                || attacker.hasKeyword("Vigilance")) {
-	                }
+                            continue;
-	                // remove the bonus, because it will no longer be granted
+                        }
-	                if (params.containsKey("AddToughness")) {
+                        // remove the bonus, because it will no longer be granted
-	                	toughness -= Integer.valueOf(params.get("AddToughness"));
+                        if (params.containsKey("AddToughness")) {
-	                }
+                            toughness -= Integer.valueOf(params.get("AddToughness"));
+                        }
+                    }
                 }
             }
         }
@@ -1517,9 +1554,9 @@ public class ComputerUtilCombat {
             } else {
                 String bonus = new String(source.getSVar(def));
                 if (bonus.contains("TriggerCount$NumBlockers")) {
-                    bonus = bonus.replace("TriggerCount$NumBlockers", "Number$1");
+                    bonus = TextUtil.fastReplace(bonus, "TriggerCount$NumBlockers", "Number$1");
                 } else if (bonus.contains("TriggeredPlayersDefenders$Amount")) { // for Melee
-                    bonus = bonus.replace("TriggeredPlayersDefenders$Amount", "Number$1");
+                    bonus = TextUtil.fastReplace(bonus, "TriggeredPlayersDefenders$Amount", "Number$1");
                 }
                 toughness += CardFactoryUtil.xCount(source, bonus);
             }
@@ -1674,6 +1711,10 @@ public class ComputerUtilCombat {
      */
     public static boolean canDestroyAttacker(Player ai, Card attacker, Card blocker, final Combat combat,
             final boolean withoutAbilities) {
+        return canDestroyAttacker(ai, attacker, blocker, combat, withoutAbilities, false);
+    }
+    public static boolean canDestroyAttacker(Player ai, Card attacker, Card blocker, final Combat combat,
+            final boolean withoutAbilities, final boolean withoutAttackerStaticAbilities) {
         // Can activate transform ability
         if (!withoutAbilities) {
             attacker = canTransform(attacker);
@@ -1725,10 +1766,10 @@ public class ComputerUtilCombat {
         }
         if (attacker.toughnessAssignsDamage()) {
             attackerDamage = attacker.getNetToughness()
-                    + ComputerUtilCombat.predictToughnessBonusOfAttacker(attacker, blocker, combat, withoutAbilities);
+                    + ComputerUtilCombat.predictToughnessBonusOfAttacker(attacker, blocker, combat, withoutAbilities, withoutAttackerStaticAbilities);
         } else {
         	attackerDamage = attacker.getNetPower()
-                    + ComputerUtilCombat.predictPowerBonusOfAttacker(attacker, blocker, combat, withoutAbilities);
+                    + ComputerUtilCombat.predictPowerBonusOfAttacker(attacker, blocker, combat, withoutAbilities, withoutAttackerStaticAbilities);
         }
 
         int possibleDefenderPrevention = 0;
@@ -1741,11 +1782,16 @@ public class ComputerUtilCombat {
         // consider Damage Prevention/Replacement
         defenderDamage = predictDamageTo(attacker, defenderDamage, possibleAttackerPrevention, blocker, true);
         attackerDamage = predictDamageTo(blocker, attackerDamage, possibleDefenderPrevention, attacker, true);
+        if (!attacker.getGame().getStaticEffects().getGlobalRuleChange(GlobalRuleChange.noPrevention)) {
+            if (defenderDamage > 0 && isCombatDamagePrevented(blocker, attacker, defenderDamage)) {
+                return false;
+            }
+        }
 
         final int defenderLife = ComputerUtilCombat.getDamageToKill(blocker)
                 + ComputerUtilCombat.predictToughnessBonusOfBlocker(attacker, blocker, withoutAbilities);
         final int attackerLife = ComputerUtilCombat.getDamageToKill(attacker)
-                + ComputerUtilCombat.predictToughnessBonusOfAttacker(attacker, blocker, combat, withoutAbilities);
+                + ComputerUtilCombat.predictToughnessBonusOfAttacker(attacker, blocker, combat, withoutAbilities, withoutAttackerStaticAbilities);
 
         if (blocker.hasKeyword("Double Strike")) {
             if (defenderDamage > 0 && (hasKeyword(blocker, "Deathtouch", withoutAbilities, combat) || attacker.hasSVar("DestroyWhenDamaged"))) {
@@ -1914,6 +1960,10 @@ public class ComputerUtilCombat {
      */
     public static boolean canDestroyBlocker(Player ai, Card blocker, Card attacker, final Combat combat,
             final boolean withoutAbilities) {
+        return canDestroyBlocker(ai, blocker, attacker, combat, withoutAbilities, false);
+    }
+    public static boolean canDestroyBlocker(Player ai, Card blocker, Card attacker, final Combat combat,
+            final boolean withoutAbilities, final boolean withoutAttackerStaticAbilities) {
         // Can activate transform ability
         if (!withoutAbilities) {
             attacker = canTransform(attacker);
@@ -1947,10 +1997,10 @@ public class ComputerUtilCombat {
         }
         if (attacker.toughnessAssignsDamage()) {
             attackerDamage = attacker.getNetToughness()
-                    + ComputerUtilCombat.predictToughnessBonusOfAttacker(attacker, blocker, combat, withoutAbilities);
+                    + ComputerUtilCombat.predictToughnessBonusOfAttacker(attacker, blocker, combat, withoutAbilities, withoutAttackerStaticAbilities);
         } else {
         	attackerDamage = attacker.getNetPower()
-                    + ComputerUtilCombat.predictPowerBonusOfAttacker(attacker, blocker, combat, withoutAbilities);
+                    + ComputerUtilCombat.predictPowerBonusOfAttacker(attacker, blocker, combat, withoutAbilities, withoutAttackerStaticAbilities);
         }
 
         int possibleDefenderPrevention = 0;
@@ -1975,7 +2025,7 @@ public class ComputerUtilCombat {
         final int defenderLife = ComputerUtilCombat.getDamageToKill(blocker)
                 + ComputerUtilCombat.predictToughnessBonusOfBlocker(attacker, blocker, withoutAbilities);
         final int attackerLife = ComputerUtilCombat.getDamageToKill(attacker)
-                + ComputerUtilCombat.predictToughnessBonusOfAttacker(attacker, blocker, combat, withoutAbilities);
+                + ComputerUtilCombat.predictToughnessBonusOfAttacker(attacker, blocker, combat, withoutAbilities, withoutAttackerStaticAbilities);
 
         if (attacker.hasKeyword("Double Strike")) {
             if (attackerDamage > 0 && (hasKeyword(attacker, "Deathtouch", withoutAbilities, combat) || blocker.hasSVar("DestroyWhenDamaged"))) {
@@ -2192,6 +2242,7 @@ public class ComputerUtilCombat {
      */
     public final static int getDamageToKill(final Card c) {
         int killDamage = c.getLethalDamage() + c.getPreventNextDamageTotalShields();
+
         if ((killDamage > c.getPreventNextDamageTotalShields())
                 && c.hasSVar("DestroyWhenDamaged")) {
             killDamage = 1 + c.getPreventNextDamageTotalShields();
@@ -2431,6 +2482,94 @@ public class ComputerUtilCombat {
         int afflictDmg = attacker.getKeywordMagnitude("Afflict");
         return afflictDmg > attacker.getNetPower() || afflictDmg >= aiDefender.getLife();
     }
+
+    public static int getMaxAttackersFor(final GameEntity defender) {
+        if (defender instanceof Player) {
+            for (final Card card : ((Player) defender).getCardsIn(ZoneType.Battlefield)) {
+                if (card.hasKeyword("No more than one creature can attack you each combat.")) {
+                    return 1;
+                } else if (card.hasKeyword("No more than two creatures can attack you each combat.")) {
+                    return 2;
+                }
+            }
+        }
+
+        return -1;
+    }
+
+    public static List<Card> categorizeAttackersByEvasion(List<Card> attackers) {
+        List<Card> categorizedAttackers = Lists.newArrayList();
+
+        CardCollection withEvasion = new CardCollection();
+        CardCollection withoutEvasion = new CardCollection();
+
+        for (Card atk : attackers) {
+            boolean hasProtection = false;
+            for (String kw : atk.getKeywords()) {
+                if (kw.startsWith("Protection")) {
+                    hasProtection = true;
+                    break;
+                }
+            }
+
+            if (atk.hasKeyword("Flying") || atk.hasKeyword("Shadow")
+                    || atk.hasKeyword("Horsemanship") || (atk.hasKeyword("Fear")
+                    || atk.hasKeyword("Intimidate") || atk.hasKeyword("Skulk") || hasProtection)) {
+                withEvasion.add(atk);
+            } else {
+                withoutEvasion.add(atk);
+            }
+        }
+
+        // attackers that can only be blocked by cards with specific keywords or color, etc.
+        // (maybe will need to split into 2 or 3 tiers depending on importance)
+        categorizedAttackers.addAll(withEvasion);
+        // all other attackers that have no evasion
+        // (Menace and other abilities that limit blocking by amount of blockers is likely handled
+        // elsewhere, but that needs testing and possibly fine-tuning).
+        categorizedAttackers.addAll(withoutEvasion);
+
+        return categorizedAttackers;
+    }
+
+    public static Card applyPotentialAttackCloneTriggers(Card attacker) {
+        // This method returns the potentially cloned card if the creature turns into something else during the attack
+        // (currently looks for the creature with maximum raw power since that's what the AI usually judges by when
+        // deciding whether the creature is worth blocking).
+        // If the creature doesn't change into anything, returns the original creature.
+        if (attacker == null) { return null; }
+        Card attackerAfterTrigs = attacker;
+
+        // Test for some special triggers that can change the creature in combat
+        for (Trigger t : attacker.getTriggers()) {
+            if (t.getMode() == TriggerType.Attacks && t.hasParam("Execute")) {
+                if (!attacker.hasSVar(t.getParam("Execute"))) {
+                    continue;
+                }
+                SpellAbility exec = AbilityFactory.getAbility(attacker, t.getParam("Execute"));
+                if (exec != null) {
+                    if (exec.getApi() == ApiType.Clone && "Self".equals(exec.getParam("CloneTarget"))
+                            && exec.hasParam("ValidTgts") && exec.getParam("ValidTgts").contains("Creature")
+                            && exec.getParam("ValidTgts").contains("attacking")) {
+                        // Tilonalli's Skinshifter and potentially other similar cards that can clone other stuff
+                        // while attacking
+                        if (exec.getParam("ValidTgts").contains("nonLegendary") && attacker.getType().isLegendary()) {
+                            continue;
+                        }
+                        int maxPwr = 0;
+                        for (Card c : attacker.getController().getCreaturesInPlay()) {
+                            if (c.getNetPower() > maxPwr || (c.getNetPower() == maxPwr && ComputerUtilCard.evaluateCreature(c) > ComputerUtilCard.evaluateCreature(attackerAfterTrigs))) {
+                                maxPwr = c.getNetPower();
+                                attackerAfterTrigs = c;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        return attackerAfterTrigs;
+    }
 }
 
 

forge-ai/src/main/java/forge/ai/ComputerUtilCost.java

@@ -90,6 +90,15 @@ public class ComputerUtilCost {
                     return false;
                 }
 
+                // Remove X counters - set ChosenX to max possible value here, the SAs should correct that
+                // value later as the AI decides what to do (in checkApiLogic / checkAiLogic)
+                if (sa != null && sa.hasSVar(remCounter.getAmount())) {
+                    final String sVar = sa.getSVar(remCounter.getAmount());
+                    if (sVar.equals("XChoice")) {
+                        sa.setSVar("ChosenX", String.valueOf(source.getCounters(type)));
+                    }
+                }
+
                 // check the sa what the PaymentDecision is.
                 // ignore Loyality abilities with Zero as Cost
                 if (sa != null && !CounterType.LOYALTY.equals(type)) {
@@ -231,13 +240,15 @@ public class ComputerUtilCost {
      *            the source
      * @return true, if successful
      */
-    public static boolean checkCreatureSacrificeCost(final Player ai, final Cost cost, final Card source) {
+    public static boolean checkCreatureSacrificeCost(final Player ai, final Cost cost, final Card source, final SpellAbility sourceAbility) {
         if (cost == null) {
             return true;
         }
         for (final CostPart part : cost.getCostParts()) {
             if (part instanceof CostSacrifice) {
                 final CostSacrifice sac = (CostSacrifice) part;
+                final int amount = AbilityUtils.calculateAmount(source, sac.getAmount(), sourceAbility);
+
                 if (sac.payCostFromSource() && source.isCreature()) {
                     return false;
                 }
@@ -247,9 +258,18 @@ public class ComputerUtilCost {
                     continue;
                 }
 
-                final CardCollection typeList = CardLists.getValidCards(ai.getCardsIn(ZoneType.Battlefield), type.split(","), source.getController(), source, null);
+                final CardCollection sacList = new CardCollection();
-                if (ComputerUtil.getCardPreference(ai, source, "SacCost", typeList) == null) {
+                final CardCollection typeList = CardLists.getValidCards(ai.getCardsIn(ZoneType.Battlefield), type.split(";"), source.getController(), source, null);
-                    return false;
+
+                int count = 0;
+                while (count < amount) {
+                    Card prefCard = ComputerUtil.getCardPreference(ai, source, "SacCost", typeList);
+                    if (prefCard == null) {
+                        return false;
+                    }
+                    sacList.add(prefCard);
+                    typeList.remove(prefCard);
+                    count++;
                 }
             }
         }
@@ -267,13 +287,14 @@ public class ComputerUtilCost {
      *            is the gain important enough?
      * @return true, if successful
      */
-    public static boolean checkSacrificeCost(final Player ai, final Cost cost, final Card source, final boolean important) {
+    public static boolean checkSacrificeCost(final Player ai, final Cost cost, final Card source, final SpellAbility sourceAbility, final boolean important) {
         if (cost == null) {
             return true;
         }
         for (final CostPart part : cost.getCostParts()) {
             if (part instanceof CostSacrifice) {
                 final CostSacrifice sac = (CostSacrifice) part;
+                final int amount = AbilityUtils.calculateAmount(source, sac.getAmount(), sourceAbility);
 
                 final String type = sac.getType();
 
@@ -286,9 +307,19 @@ public class ComputerUtilCost {
                     }
                     continue;
                 }
+
+                final CardCollection sacList = new CardCollection();
                 final CardCollection typeList = CardLists.getValidCards(ai.getCardsIn(ZoneType.Battlefield), type.split(";"), source.getController(), source, null);
-                if (ComputerUtil.getCardPreference(ai, source, "SacCost", typeList) == null) {
+
-                    return false;
+                int count = 0;
+                while (count < amount) {
+                    Card prefCard = ComputerUtil.getCardPreference(ai, source, "SacCost", typeList);
+                    if (prefCard == null) {
+                        return false;
+                    }
+                    sacList.add(prefCard);
+                    typeList.remove(prefCard);
+                    count++;
                 }
             }
         }
@@ -336,7 +367,7 @@ public class ComputerUtilCost {
                     final int vehicleValue = ComputerUtilCard.evaluateCreature(vehicle);
                     String type = part.getType();
                     String totalP = type.split("withTotalPowerGE")[1];
-                    type = type.replace("+withTotalPowerGE" + totalP, "");
+                    type = TextUtil.fastReplace(type, TextUtil.concatNoSpace("+withTotalPowerGE", totalP), "");
                     CardCollection exclude = CardLists.getValidCards(
                             new CardCollection(ai.getCardsIn(ZoneType.Battlefield)), type.split(";"),
                             source.getController(), source, sa);
@@ -364,8 +395,8 @@ public class ComputerUtilCost {
      *            the source
      * @return true, if successful
      */
-    public static boolean checkSacrificeCost(final Player ai, final Cost cost, final Card source) {
+    public static boolean checkSacrificeCost(final Player ai, final Cost cost, final Card source, final SpellAbility sourceAbility) {
-        return checkSacrificeCost(ai, cost, source, true);
+        return checkSacrificeCost(ai, cost, source, sourceAbility,true);
     }
 
     /**
@@ -561,12 +592,12 @@ public class ComputerUtilCost {
 
         return checkLifeCost(payer, cost, source, 4, sa)
             && checkDamageCost(payer, cost, source, 4)
-            && (isMine || checkSacrificeCost(payer, cost, source))
+            && (isMine || checkSacrificeCost(payer, cost, source, sa))
             && (isMine || checkDiscardCost(payer, cost, source))
             && (!source.getName().equals("Tyrannize") || payer.getCardsIn(ZoneType.Hand).size() > 2)
             && (!source.getName().equals("Perplex") || payer.getCardsIn(ZoneType.Hand).size() < 2)
             && (!source.getName().equals("Breaking Point") || payer.getCreaturesInPlay().size() > 1)
-            && (!source.getName().equals("Chain of Vapor") || (payer.getOpponent().getCreaturesInPlay().size() > 0 && payer.getLandsInPlay().size() > 3));
+            && (!source.getName().equals("Chain of Vapor") || (ComputerUtil.getOpponentFor(payer).getCreaturesInPlay().size() > 0 && payer.getLandsInPlay().size() > 3));
     }
 
     public static Set<String> getAvailableManaColors(Player ai, Card additionalLand) {

forge-ai/src/main/java/forge/ai/ComputerUtilMana.java

@@ -1,12 +1,8 @@
 package forge.ai;
 
 import com.google.common.base.Predicate;
-import com.google.common.collect.ArrayListMultimap;
+import com.google.common.base.Predicates;
-import com.google.common.collect.ListMultimap;
+import com.google.common.collect.*;
-import com.google.common.collect.Lists;
-import com.google.common.collect.Maps;
-import com.google.common.collect.Multimap;
-
 import forge.ai.ability.AnimateAi;
 import forge.card.ColorSet;
 import forge.card.MagicColor;
@@ -18,11 +14,7 @@ import forge.game.Game;
 import forge.game.GameActionUtil;
 import forge.game.ability.AbilityUtils;
 import forge.game.ability.ApiType;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
-import forge.game.card.CardCollectionView;
-import forge.game.card.CardLists;
-import forge.game.card.CardUtil;
 import forge.game.combat.CombatUtil;
 import forge.game.cost.Cost;
 import forge.game.cost.CostAdjustment;
@@ -41,7 +33,6 @@ import forge.game.spellability.SpellAbility;
 import forge.game.zone.ZoneType;
 import forge.util.MyRandom;
 import forge.util.TextUtil;
-
 import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.lang3.tuple.Pair;
 
@@ -203,41 +194,72 @@ public class ComputerUtilMana {
                 continue;
             }
 
-            if (sa.getHostCard() != null && sa.getApi() == ApiType.Animate) {
+            if (sa.getHostCard() != null) {
-                // For abilities like Genju of the Cedars, make sure that we're not activating the aura ability by tapping the enchanted card for mana
+                if (sa.getApi() == ApiType.Animate) {
-                if (sa.getHostCard().isAura() && "Enchanted".equals(sa.getParam("Defined"))
+                    // For abilities like Genju of the Cedars, make sure that we're not activating the aura ability by tapping the enchanted card for mana
-                        && ma.getHostCard() == sa.getHostCard().getEnchantingCard()
+                    if (sa.getHostCard().isAura() && "Enchanted".equals(sa.getParam("Defined"))
-                        && ma.getPayCosts().hasTapCost()) {
+                            && ma.getHostCard() == sa.getHostCard().getEnchantingCard()
-                    continue;
+                            && ma.getPayCosts().hasTapCost()) {
+                        continue;
+                    }
+
+                    // If a manland was previously animated this turn, do not tap it to animate another manland
+                    if (sa.getHostCard().isLand() && ma.getHostCard().isLand()
+                            && ai.getController().isAI()
+                            && AnimateAi.isAnimatedThisTurn(ai, ma.getHostCard())) {
+                        continue;
+                    }
+                } else if (sa.getApi() == ApiType.Pump) {
+                    if ((sa.getHostCard().isInstant() || sa.getHostCard().isSorcery())
+                            && ma.getHostCard().isCreature()
+                            && ai.getController().isAI()
+                            && ma.getPayCosts().hasTapCost()
+                            && sa.getTargets().getTargetCards().contains(ma.getHostCard())) {
+                        // do not activate pump instants/sorceries targeting creatures by tapping targeted
+                        // creatures for mana (for example, Servant of the Conduit)
+                        continue;
+                    }
+                } else if (sa.getApi() == ApiType.Attach
+                        && "AvoidPayingWithAttachTarget".equals(sa.getHostCard().getSVar("AIPaymentPreference"))) {
+                    // For cards like Genju of the Cedars, make sure we're not attaching to the same land that will
+                    // be tapped to pay its own cost if there's another untapped land like that available
+                    if (ma.getHostCard().equals(sa.getTargetCard())) {
+                        if (CardLists.filter(ai.getCardsIn(ZoneType.Battlefield), Predicates.and(CardPredicates.nameEquals(ma.getHostCard().getName()), CardPredicates.Presets.UNTAPPED)).size() > 1) {
+                            continue;
+                        }
+                    }
                 }
 
-                // If a manland was previously animated this turn, do not tap it to animate another manland
-                if (sa.getHostCard().isLand() && ma.getHostCard().isLand() 
-                        && ai.getController() instanceof PlayerControllerAi
-                        && AnimateAi.isAnimatedThisTurn(ai, ma.getHostCard())) {
-                    continue;
-                }
             }
 
+            SpellAbility paymentChoice = ma;
+
             // Exception: when paying generic mana with Cavern of Souls, prefer the colored mana producing ability
             // to attempt to make the spell uncounterable when possible.
-            if ((toPay == ManaCostShard.GENERIC || toPay == ManaCostShard.X) 
+            if (ComputerUtilAbility.getAbilitySourceName(ma).equals("Cavern of Souls")
-                    && ComputerUtilAbility.getAbilitySourceName(ma).equals("Cavern of Souls")
                     && sa.getHostCard().getType().getCreatureTypes().contains(ma.getHostCard().getChosenType())) {
-                for (SpellAbility ab : saList) {
+                if (toPay == ManaCostShard.COLORLESS && cost.getUnpaidShards().contains(ManaCostShard.GENERIC)) {
-                    if (ab.isManaAbility() && ab.getManaPart().isAnyMana() && ab.hasParam("AddsNoCounter")) {
+                    // Deprioritize Cavern of Souls, try to pay generic mana with it instead to use the NoCounter ability
-                        return ab;
+                    continue;
+                } else if (toPay == ManaCostShard.GENERIC || toPay == ManaCostShard.X) {
+                    for (SpellAbility ab : saList) {
+                        if (ab.isManaAbility() && ab.getManaPart().isAnyMana() && ab.hasParam("AddsNoCounter")) {
+                            if (!ab.getHostCard().isTapped()) {
+                                paymentChoice = ab;
+                                break;
+                            }
+                        }
                     }
                 }
             }
 
             final String typeRes = cost.getSourceRestriction();
-            if (StringUtils.isNotBlank(typeRes) && !ma.getHostCard().getType().hasStringType(typeRes)) {
+            if (StringUtils.isNotBlank(typeRes) && !paymentChoice.getHostCard().getType().hasStringType(typeRes)) {
                 continue;
             }
 
-            if (canPayShardWithSpellAbility(toPay, ai, ma, sa, checkCosts)) {
+            if (canPayShardWithSpellAbility(toPay, ai, paymentChoice, sa, checkCosts)) {
-                return ma;
+                return paymentChoice;
             }
         }
         return null;
@@ -802,7 +824,7 @@ public class ComputerUtilMana {
     }
 
     // isManaSourceReserved returns true if sourceCard is reserved as a mana source for payment
-    // for the future spell to be cast in Mana 2. However, if "sa" (the spell ability that is
+    // for the future spell to be cast in another phase. However, if "sa" (the spell ability that is
     // being considered for casting) is high priority, then mana source reservation will be
     // ignored.
     private static boolean isManaSourceReserved(Player ai, Card sourceCard, SpellAbility sa) {
@@ -816,8 +838,21 @@ public class ComputerUtilMana {
         AiController aic = ((PlayerControllerAi)ai.getController()).getAi();
         int chanceToReserve = aic.getIntProperty(AiProps.RESERVE_MANA_FOR_MAIN2_CHANCE);
 
+        PhaseType curPhase = ai.getGame().getPhaseHandler().getPhase();
+
+        // For combat tricks, always obey mana reservation
+        if (curPhase == PhaseType.COMBAT_DECLARE_BLOCKERS || curPhase == PhaseType.CLEANUP) {
+            AiCardMemory.clearMemorySet(ai, AiCardMemory.MemorySet.HELD_MANA_SOURCES_FOR_DECLBLK);
+        }
+        else {
+            if (AiCardMemory.isRememberedCard(ai, sourceCard, AiCardMemory.MemorySet.HELD_MANA_SOURCES_FOR_DECLBLK)) {
+                // This mana source is held elsewhere for a combat trick.
+                return true;
+            }
+        }
+
         // If it's a low priority spell (it's explicitly marked so elsewhere in the AI with a SVar), always
-        // obey mana reservations; otherwise, obey mana reservations depending on the "chance to reserve" 
+        // obey mana reservations for Main 2; otherwise, obey mana reservations depending on the "chance to reserve"
         // AI profile variable.
         if (sa.getSVar("LowPriorityAI").equals("")) {
             if (chanceToReserve == 0 || MyRandom.getRandom().nextInt(100) >= chanceToReserve) {
@@ -825,16 +860,16 @@ public class ComputerUtilMana {
             }
         }
 
-        PhaseType curPhase = ai.getGame().getPhaseHandler().getPhase();
         if (curPhase == PhaseType.MAIN2 || curPhase == PhaseType.CLEANUP) {
-            AiCardMemory.clearMemorySet(ai, AiCardMemory.MemorySet.HELD_MANA_SOURCES);
+            AiCardMemory.clearMemorySet(ai, AiCardMemory.MemorySet.HELD_MANA_SOURCES_FOR_MAIN2);
         }
         else {
-            if (AiCardMemory.isRememberedCard(ai, sourceCard, AiCardMemory.MemorySet.HELD_MANA_SOURCES)) {
+            if (AiCardMemory.isRememberedCard(ai, sourceCard, AiCardMemory.MemorySet.HELD_MANA_SOURCES_FOR_MAIN2)) {
                 // This mana source is held elsewhere for a Main Phase 2 spell.
                 return true;
             }
         }
+
         return false;
     }
 
@@ -1092,8 +1127,65 @@ public class ComputerUtilMana {
         return cost;
     }
 
+    // This method can be used to estimate the total amount of mana available to the player,
+    // including the mana available in that player's mana pool
+    public static int getAvailableManaEstimate(final Player p) {
+        return getAvailableManaEstimate(p, true);
+    }
+
+    public static int getAvailableManaEstimate(final Player p, final boolean checkPlayable) {
+        int availableMana = 0;
+
+        final CardCollectionView list = new CardCollection(p.getCardsIn(ZoneType.Battlefield));
+        final List<Card> srcs = CardLists.filter(list, new Predicate<Card>() {
+            @Override
+            public boolean apply(final Card c) {
+                return !c.getManaAbilities().isEmpty();
+            }
+        });
+
+        int maxProduced = 0;
+        int producedWithCost = 0;
+        boolean hasSourcesWithNoManaCost = false;
+
+        for (Card src : srcs) {
+            maxProduced = 0;
+
+            for (SpellAbility ma : src.getManaAbilities()) {
+                ma.setActivatingPlayer(p);
+                if (!checkPlayable || ma.canPlay()) {
+                    int costsToActivate = ma.getPayCosts() != null && ma.getPayCosts().getCostMana() != null ? ma.getPayCosts().getCostMana().convertAmount() : 0;
+                    int producedMana = ma.getParamOrDefault("Produced", "").split(" ").length;
+                    int producedAmount = AbilityUtils.calculateAmount(src, ma.getParamOrDefault("Amount", "1"), ma);
+
+                    int producedTotal = producedMana * producedAmount - costsToActivate;
+
+                    if (costsToActivate > 0) {
+                        producedWithCost += producedTotal;
+                    } else if (!hasSourcesWithNoManaCost) {
+                        hasSourcesWithNoManaCost = true;
+                    }
+
+                    if (producedTotal > maxProduced) {
+                        maxProduced = producedTotal;
+                    }
+                }
+            }
+
+            availableMana += maxProduced;
+        }
+
+        availableMana += p.getManaPool().totalMana();
+
+        if (producedWithCost > 0 && !hasSourcesWithNoManaCost) {
+            availableMana -= producedWithCost; // probably can't activate them, no other mana available
+        }
+
+        return availableMana;
+    }
+
     //This method is currently used by AI to estimate available mana
-    public static CardCollection getAvailableMana(final Player ai, final boolean checkPlayable) {
+    public static CardCollection getAvailableManaSources(final Player ai, final boolean checkPlayable) {
         final CardCollectionView list = CardCollection.combine(ai.getCardsIn(ZoneType.Battlefield), ai.getCardsIn(ZoneType.Hand));
         final List<Card> manaSources = CardLists.filter(list, new Predicate<Card>() {
             @Override
@@ -1200,7 +1292,7 @@ public class ComputerUtilMana {
             System.out.println("DEBUG_MANA_PAYMENT: sortedManaSources = " + sortedManaSources);
         }
         return sortedManaSources;
-    } // getAvailableMana()
+    } // getAvailableManaSources()
 
     //This method is currently used by AI to estimate mana available
     private static ListMultimap<Integer, SpellAbility> groupSourcesByManaColor(final Player ai, boolean checkPlayable) {
@@ -1221,7 +1313,7 @@ public class ComputerUtilMana {
         }
 
         // Loop over all current available mana sources
-        for (final Card sourceCard : getAvailableMana(ai, checkPlayable)) {
+        for (final Card sourceCard : getAvailableManaSources(ai, checkPlayable)) {
             if (DEBUG_MANA_PAYMENT) {
                 System.out.println("DEBUG_MANA_PAYMENT: groupSourcesByManaColor sourceCard = " + sourceCard);
             }
@@ -1264,7 +1356,7 @@ public class ComputerUtilMana {
                         Card crd = replacementEffect.getHostCard();
                         String repType = crd.getSVar(replacementEffect.getMapParams().get("ManaReplacement"));
                         if (repType.contains("Chosen")) {
-                            repType = repType.replace("Chosen", MagicColor.toShortString(crd.getChosenColor()));
+                            repType = TextUtil.fastReplace(repType, "Chosen", MagicColor.toShortString(crd.getChosenColor()));
                         }
                         mp.setManaReplaceType(repType);
                     }

forge-ai/src/main/java/forge/ai/CreatureEvaluator.java

@@ -1,8 +1,10 @@
 package forge.ai;
 
 import com.google.common.base.Function;
-
+import forge.game.ability.ApiType;
 import forge.game.card.Card;
+import forge.game.card.CounterType;
+import forge.game.cost.CostPayEnergy;
 import forge.game.spellability.SpellAbility;
 
 public class CreatureEvaluator implements Function<Card, Integer> {
@@ -19,6 +21,10 @@ public class CreatureEvaluator implements Function<Card, Integer> {
     }
 
     public int evaluateCreature(final Card c) {
+        return evaluateCreature(c, true, true);
+    }
+
+    public int evaluateCreature(final Card c, final boolean considerPT, final boolean considerCMC) {
         int value = 80;
         if (!c.isToken()) {
             value += addValue(20, "non-token"); // tokens should be worth less than actual cards
@@ -34,9 +40,13 @@ public class CreatureEvaluator implements Function<Card, Integer> {
                 break;
             }
         }
-        value += addValue(power * 15, "power");
+        if (considerPT) {
-        value += addValue(toughness * 10, "toughness: " + toughness);
+            value += addValue(power * 15, "power");
-        value += addValue(c.getCMC() * 5, "cmc");
+            value += addValue(toughness * 10, "toughness: " + toughness);
+        }
+        if (considerCMC) {
+            value += addValue(c.getCMC() * 5, "cmc");
+        }
     
         // Evasion keywords
         if (c.hasKeyword("Flying")) {
@@ -91,6 +101,7 @@ public class CreatureEvaluator implements Function<Card, Integer> {
                 value += addValue(power * 15, "infect");
             }
             value += addValue(c.getKeywordMagnitude("Rampage"), "rampage");
+            value += addValue(c.getKeywordMagnitude("Afflict") * 5, "afflict");
         }
     
         value += addValue(c.getKeywordMagnitude("Bushido") * 16, "bushido");
@@ -99,6 +110,14 @@ public class CreatureEvaluator implements Function<Card, Integer> {
         value += addValue(c.getKeywordMagnitude("Annihilator") * 50, "eldrazi");
         value += addValue(c.getKeywordMagnitude("Absorb") * 11, "absorb");
 
+        // Keywords that may produce temporary or permanent buffs over time
+        if (c.hasKeyword("Prowess")) {
+            value += addValue(5, "prowess");
+        }
+        if (c.hasKeyword("Outlast")) {
+            value += addValue(10, "outlast");
+        }
+
         // Defensive Keywords
         if (c.hasKeyword("Reach") && !c.hasKeyword("Flying")) {
             value += addValue(5, "reach");
@@ -184,7 +203,7 @@ public class CreatureEvaluator implements Function<Card, Integer> {
     
         for (final SpellAbility sa : c.getSpellAbilities()) {
             if (sa.isAbility()) {
-                value += addValue(10, "sa: " + sa);
+                value += addValue(evaluateSpellAbility(sa), "sa: " + sa);
             }
         }
         if (!c.getManaAbilities().isEmpty()) {
@@ -203,9 +222,38 @@ public class CreatureEvaluator implements Function<Card, Integer> {
         if (!c.getEncodedCards().isEmpty()) {
             value += addValue(24, "encoded");
         }
+
         return value;
     }
 
+    private int evaluateSpellAbility(SpellAbility sa) {
+        // Pump abilities
+        if (sa.getApi() == ApiType.Pump) {
+            // Pump abilities that grant +X/+X to the card
+            if ("+X".equals(sa.getParam("NumAtt"))
+                    && "+X".equals(sa.getParam("NumDef"))
+                    && !sa.usesTargeting()
+                    && (!sa.hasParam("Defined") || "Self".equals(sa.getParam("Defined")))) {
+                if (sa.getPayCosts() != null && sa.getPayCosts().hasOnlySpecificCostType(CostPayEnergy.class)) {
+                    // Electrostatic Pummeler, can be expanded for similar cards
+                    int initPower = getEffectivePower(sa.getHostCard());
+                    int pumpedPower = initPower;
+                    int energy = sa.getHostCard().getController().getCounters(CounterType.ENERGY);
+                    if (energy > 0) {
+                        int numActivations = energy / 3;
+                        for (int i = 0; i < numActivations; i++) {
+                            pumpedPower *= 2;
+                        }
+                        return (pumpedPower - initPower) * 15;
+                    }
+                }
+            }
+        }
+
+        // default value
+        return 10;
+    }
+
     protected int addValue(int value, String text) {
         return value;
     }

forge-ai/src/main/java/forge/ai/GameState.java

@@ -4,15 +4,21 @@ import java.io.BufferedReader;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.EnumMap;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
+import java.util.Set;
 
+import com.google.common.collect.ArrayListMultimap;
 import com.google.common.collect.Lists;
-import forge.StaticData;
+import com.google.common.collect.Maps;
+import com.google.common.collect.Multimap;
 
+import forge.StaticData;
 import forge.card.CardStateName;
 import forge.game.Game;
 import forge.game.GameEntity;
@@ -23,14 +29,21 @@ import forge.game.card.CardCollection;
 import forge.game.card.CardCollectionView;
 import forge.game.card.CardFactory;
 import forge.game.card.CounterType;
+import forge.game.combat.Combat;
+import forge.game.combat.CombatUtil;
+import forge.game.event.GameEventAttackersDeclared;
+import forge.game.event.GameEventCombatChanged;
 import forge.game.phase.PhaseType;
 import forge.game.player.Player;
+import forge.game.spellability.SpellAbility;
 import forge.game.trigger.TriggerType;
 import forge.game.zone.PlayerZone;
 import forge.game.zone.ZoneType;
 import forge.item.IPaperCard;
 import forge.item.PaperCard;
+import forge.util.TextUtil;
 import forge.util.collect.FCollectionView;
+import org.apache.commons.lang3.StringUtils;
 
 public abstract class GameState {
     private static final Map<ZoneType, String> ZONES = new HashMap<ZoneType, String>();
@@ -48,17 +61,38 @@ public abstract class GameState {
     private String humanCounters = "";
     private String computerCounters = "";
 
+    private boolean puzzleCreatorState = false;
+
     private final Map<ZoneType, String> humanCardTexts = new EnumMap<ZoneType, String>(ZoneType.class);
     private final Map<ZoneType, String> aiCardTexts = new EnumMap<ZoneType, String>(ZoneType.class);
 
     private final Map<Integer, Card> idToCard = new HashMap<>();
     private final Map<Card, Integer> cardToAttachId = new HashMap<>();
+    private final Map<Card, Integer> markedDamage = new HashMap<>();
+    private final Map<Card, List<String>> cardToChosenClrs = new HashMap<>();
+    private final Map<Card, String> cardToChosenType = new HashMap<>();
+    private final Map<Card, List<String>> cardToRememberedId = new HashMap<>();
+    private final Map<Card, List<String>> cardToImprintedId = new HashMap<>();
+    private final Map<Card, String> cardToExiledWithId = new HashMap<>();
+    private final Map<Card, Card> cardAttackMap = new HashMap<>();
+
+    private final Map<Card, String> cardToScript = new HashMap<>();
 
     private final Map<String, String> abilityString = new HashMap<>();
 
+    private final Set<Card> cardsReferencedByID = new HashSet<>();
+
     private String tChangePlayer = "NONE";
     private String tChangePhase = "NONE";
 
+    private String precastHuman = null;
+    private String precastAI = null;
+
+    // Targeting for precast spells in a game state (mostly used by Puzzle Mode game states)
+    private final int TARGET_NONE = -1; // untargeted spell (e.g. Joraga Invocation)
+    private final int TARGET_HUMAN = -2;
+    private final int TARGET_AI = -3;
+
     public GameState() {
     }
 
@@ -67,18 +101,31 @@ public abstract class GameState {
     @Override
     public String toString() {
         StringBuilder sb = new StringBuilder();
-        sb.append(String.format("humanlife=%d\n", humanLife));
+
-        sb.append(String.format("ailife=%d\n", computerLife));
+        if (puzzleCreatorState) {
+            // append basic puzzle metadata if we're dumping from the puzzle creator screen
+            sb.append("[metadata]\n");
+            sb.append("Name:New Puzzle\n");
+            sb.append("URL:https://www.cardforge.org\n");
+            sb.append("Goal:Win\n");
+            sb.append("Turns:1\n");
+            sb.append("Difficulty:Easy\n");
+            sb.append("Description:Win this turn.\n");
+            sb.append("[state]\n");
+        }
+
+        sb.append(TextUtil.concatNoSpace("humanlife=", String.valueOf(humanLife), "\n"));
+        sb.append(TextUtil.concatNoSpace("ailife=", String.valueOf(computerLife), "\n"));
 
         if (!humanCounters.isEmpty()) {
-            sb.append(String.format("humancounters=%s\n", humanCounters));
+            sb.append(TextUtil.concatNoSpace("humancounters=", humanCounters, "\n"));
         }
         if (!computerCounters.isEmpty()) {
-            sb.append(String.format("aicounters=%s\n", computerCounters));
+            sb.append(TextUtil.concatNoSpace("aicounters=", computerCounters, "\n"));
         }
 
-        sb.append(String.format("activeplayer=%s\n", tChangePlayer));
+        sb.append(TextUtil.concatNoSpace("activeplayer=", tChangePlayer, "\n"));
-        sb.append(String.format("activephase=%s\n", tChangePhase));
+        sb.append(TextUtil.concatNoSpace("activephase=", tChangePhase, "\n"));
         appendCards(humanCardTexts, "human", sb);
         appendCards(aiCardTexts, "ai", sb);
         return sb.toString();
@@ -86,13 +133,13 @@ public abstract class GameState {
 
     private void appendCards(Map<ZoneType, String> cardTexts, String categoryPrefix, StringBuilder sb) {
         for (Entry<ZoneType, String> kv : cardTexts.entrySet()) {
-            sb.append(String.format("%s%s=%s\n", categoryPrefix, ZONES.get(kv.getKey()), kv.getValue()));
+            sb.append(TextUtil.concatNoSpace(categoryPrefix, ZONES.get(kv.getKey()), "=", kv.getValue(), "\n"));
         }
     }
 
     public void initFromGame(Game game) throws Exception {
         FCollectionView<Player> players = game.getPlayers();
-        // Can only serialized a two player game with one AI and one human.
+        // Can only serialize a two player game with one AI and one human.
         if (players.size() != 2) {
             throw new Exception("Game not supported");
         }
@@ -110,12 +157,52 @@ public abstract class GameState {
         tChangePhase = game.getPhaseHandler().getPhase().toString();
         aiCardTexts.clear();
         humanCardTexts.clear();
+
+        // Mark the cards that need their ID remembered for various reasons
+        cardsReferencedByID.clear();
+        for (ZoneType zone : ZONES.keySet()) {
+            for (Card card : game.getCardsIn(zone)) {
+                if (card.getExiledWith() != null) {
+                    // Remember the ID of the card that exiled this card
+                    cardsReferencedByID.add(card.getExiledWith());
+                }
+                if (zone == ZoneType.Battlefield) {
+                    if (!card.getEnchantedBy(false).isEmpty()
+                            || !card.getEquippedBy(false).isEmpty()
+                            || !card.getFortifiedBy(false).isEmpty()) {
+                        // Remember the ID of cards that have attachments
+                        cardsReferencedByID.add(card);
+                    }
+                }
+                for (Object o : card.getRemembered()) {
+                    // Remember the IDs of remembered cards
+                    if (o instanceof Card) {
+                        cardsReferencedByID.add((Card)o);
+                    }
+                }
+                for (Card i : card.getImprintedCards()) {
+                    // Remember the IDs of imprinted cards
+                    cardsReferencedByID.add(i);
+                }
+                if (game.getCombat() != null && game.getCombat().isAttacking(card)) {
+                    // Remember the IDs of attacked planeswalkers
+                    GameEntity def = game.getCombat().getDefenderByAttacker(card);
+                    if (def instanceof Card) {
+                        cardsReferencedByID.add((Card)def);
+                    }
+                }
+            }
+        }
+
         for (ZoneType zone : ZONES.keySet()) {
             // Init texts to empty, so that restoring will clear the state
             // if the zone had no cards in it (e.g. empty hand).
             aiCardTexts.put(zone, "");
             humanCardTexts.put(zone, "");
             for (Card card : game.getCardsIn(zone)) {
+                if (card.getName().equals("Puzzle Goal") && card.getOracleText().contains("New Puzzle")) {
+                    puzzleCreatorState = true;
+                }
                 if (card instanceof DetachedCardEffect) {
                     continue;
                 }
@@ -140,6 +227,11 @@ public abstract class GameState {
         if (c.isCommander()) {
             newText.append("|IsCommander");
         }
+
+        if (cardsReferencedByID.contains(c)) {
+            newText.append("|Id:").append(c.getId());
+        }
+
         if (zoneType == ZoneType.Battlefield) {
             if (c.isTapped()) {
                 newText.append("|Tapped");
@@ -147,6 +239,16 @@ public abstract class GameState {
             if (c.isSick()) {
                 newText.append("|SummonSick");
             }
+            if (c.isRenowned()) {
+                newText.append("|Renowned");
+            }
+            if (c.isMonstrous()) {
+                newText.append("|Monstrous:");
+                newText.append(c.getMonstrosityNum());
+            }
+            if (c.isPhasedOut()) {
+                newText.append("|PhasedOut");
+            }
             if (c.isFaceDown()) {
                 newText.append("|FaceDown");
                 if (c.isManifested()) {
@@ -155,11 +257,10 @@ public abstract class GameState {
             }
             if (c.getCurrentStateName().equals(CardStateName.Transformed)) {
                 newText.append("|Transformed");
-            }
+            } else if (c.getCurrentStateName().equals(CardStateName.Flipped)) {
-            Map<CounterType, Integer> counters = c.getCounters();
+                newText.append("|Flipped");
-            if (!counters.isEmpty()) {
+            } else if (c.getCurrentStateName().equals(CardStateName.Meld)) {
-                newText.append("|Counters:");
+                newText.append("|Meld");
-                newText.append(countersToString(counters));
             }
             if (c.getEquipping() != null) {
                 newText.append("|Attaching:").append(c.getEquipping().getId());
@@ -169,10 +270,66 @@ public abstract class GameState {
                 newText.append("|Attaching:").append(c.getEnchantingCard().getId());
             }
 
-            if (!c.getEnchantedBy(false).isEmpty() || !c.getEquippedBy(false).isEmpty() || !c.getFortifiedBy(false).isEmpty()) {
+            if (c.getDamage() > 0) {
-                newText.append("|Id:").append(c.getId());
+                newText.append("|Damage:").append(c.getDamage());
+            }
+
+            if (!c.getChosenColor().isEmpty()) {
+                newText.append("|ChosenColor:").append(TextUtil.join(c.getChosenColors(), ","));
+            }
+            if (!c.getChosenType().isEmpty()) {
+                newText.append("|ChosenType:").append(c.getChosenType());
+            }
+
+            List<String> rememberedCardIds = Lists.newArrayList();
+            for (Object obj : c.getRemembered()) {
+                if (obj instanceof Card) {
+                    int id = ((Card)obj).getId();
+                    rememberedCardIds.add(String.valueOf(id));
+                }
+            }
+            if (!rememberedCardIds.isEmpty()) {
+                newText.append("|RememberedCards:").append(TextUtil.join(rememberedCardIds, ","));
+            }
+
+            List<String> imprintedCardIds = Lists.newArrayList();
+            for (Card impr : c.getImprintedCards()) {
+                int id = impr.getId();
+                imprintedCardIds.add(String.valueOf(id));
+            }
+            if (!imprintedCardIds.isEmpty()) {
+                newText.append("|Imprinting:").append(TextUtil.join(imprintedCardIds, ","));
             }
         }
+
+        if (zoneType == ZoneType.Exile) {
+            if (c.getExiledWith() != null) {
+                newText.append("|ExiledWith:").append(c.getExiledWith().getId());
+            }
+            if (c.isFaceDown()) {
+                newText.append("|FaceDown"); // Exiled face down
+            }
+        }
+
+        if (zoneType == ZoneType.Battlefield || zoneType == ZoneType.Exile) {
+            // A card can have counters on the battlefield and in exile (e.g. exiled by Mairsil, the Pretender)
+            Map<CounterType, Integer> counters = c.getCounters();
+            if (!counters.isEmpty()) {
+                newText.append("|Counters:");
+                newText.append(countersToString(counters));
+            }
+        }
+
+        if (c.getGame().getCombat() != null) {
+            if (c.getGame().getCombat().isAttacking(c)) {
+                newText.append("|Attacking");
+                GameEntity def = c.getGame().getCombat().getDefenderByAttacker(c);
+                if (def instanceof Card) {
+                    newText.append(":" + def.getId());
+                }
+            }
+        }
+
         cardTexts.put(zoneType, newText.toString());
     }
 
@@ -186,7 +343,7 @@ public abstract class GameState {
             }
 
             first = false;
-            counterString.append(String.format("%s=%d", kv.getKey().toString(), kv.getValue()));
+            counterString.append(TextUtil.concatNoSpace(kv.getKey().toString(), "=", String.valueOf(kv.getValue())));
         }
         return counterString.toString();
     }
@@ -298,6 +455,12 @@ public abstract class GameState {
             abilityString.put(categoryName.substring("ability".length()), categoryValue);
         }
 
+        else if (categoryName.endsWith("precast")) {
+            if (isHuman)
+                precastHuman = categoryValue;
+            else
+                precastAI = categoryValue;
+        }
         else {
             System.out.println("Unknown key: " + categoryName);
         }
@@ -318,6 +481,13 @@ public abstract class GameState {
 
         idToCard.clear();
         cardToAttachId.clear();
+        cardToRememberedId.clear();
+        cardToExiledWithId.clear();
+        markedDamage.clear();
+        cardToChosenClrs.clear();
+        cardToChosenType.clear();
+        cardToScript.clear();
+        cardAttackMap.clear();
 
         Player newPlayerTurn = tChangePlayer.equals("human") ? human : tChangePlayer.equals("ai") ? ai : null;
         PhaseType newPhase = tChangePhase.equals("none") ? null : PhaseType.smartValueOf(tChangePhase);
@@ -331,22 +501,363 @@ public abstract class GameState {
         if (!computerCounters.isEmpty()) {
             applyCountersToGameEntity(ai, computerCounters);
         }
+
         game.getPhaseHandler().devModeSet(newPhase, newPlayerTurn);
 
-        game.getTriggerHandler().suppressMode(TriggerType.ChangesZone);
+        game.getTriggerHandler().setSuppressAllTriggers(true);
 
         setupPlayerState(humanLife, humanCardTexts, human);
         setupPlayerState(computerLife, aiCardTexts, ai);
 
-        game.getTriggerHandler().clearSuppression(TriggerType.ChangesZone);
+        handleCardAttachments();
+        handleChosenEntities();
+        handleRememberedEntities();
+        handleScriptExecution(game);
+        handlePrecastSpells(game);
+        handleMarkedDamage();
+
+        game.getTriggerHandler().setSuppressAllTriggers(false);
+
+        // Combat only works for 1v1 matches for now (which are the only matches dev mode supports anyway)
+        // Note: triggers may fire during combat declarations ("whenever X attacks, ...", etc.)
+        if (newPhase == PhaseType.COMBAT_DECLARE_ATTACKERS || newPhase == PhaseType.COMBAT_DECLARE_BLOCKERS) {
+            boolean toDeclareBlockers = newPhase == PhaseType.COMBAT_DECLARE_BLOCKERS;
+            handleCombat(game, newPlayerTurn, newPlayerTurn.getSingleOpponent(), toDeclareBlockers);
+        }
 
         game.getStack().setResolving(false);
 
         game.getAction().checkStateEffects(true); //ensure state based effects and triggers are updated
     }
 
+    private void handleCombat(final Game game, final Player attackingPlayer, final Player defendingPlayer, final boolean toDeclareBlockers) {
+        // First we need to ensure that all attackers are declared in the Declare Attackers step,
+        // even if proceeding straight to Declare Blockers
+        game.getPhaseHandler().devModeSet(PhaseType.COMBAT_DECLARE_ATTACKERS, attackingPlayer);
+
+        if (game.getPhaseHandler().getCombat() == null) {
+            game.getPhaseHandler().setCombat(new Combat(attackingPlayer));
+            game.updateCombatForView();
+        }
+
+        Combat combat = game.getPhaseHandler().getCombat();
+        for (Entry<Card, Card> attackMap : cardAttackMap.entrySet()) {
+            Card attacker = attackMap.getKey();
+            Card attacked = attackMap.getValue();
+
+            combat.addAttacker(attacker, attacked == null ? defendingPlayer : attacked);
+        }
+
+        // Run the necessary combat events and triggers to set things up correctly as if the
+        // attack was actually declared by the attacking player
+        Multimap<GameEntity, Card> attackersMap = ArrayListMultimap.create();
+        for (GameEntity ge : combat.getDefenders()) {
+            attackersMap.putAll(ge, combat.getAttackersOf(ge));
+        }
+        game.fireEvent(new GameEventAttackersDeclared(attackingPlayer, attackersMap));
+
+        if (!combat.getAttackers().isEmpty()) {
+            List<GameEntity> attackedTarget = Lists.newArrayList();
+            for (final Card c : combat.getAttackers()) {
+                attackedTarget.add(combat.getDefenderByAttacker(c));
+            }
+            final Map<String, Object> runParams = Maps.newHashMap();
+            runParams.put("Attackers", combat.getAttackers());
+            runParams.put("AttackingPlayer", combat.getAttackingPlayer());
+            runParams.put("AttackedTarget", attackedTarget);
+            game.getTriggerHandler().runTrigger(TriggerType.AttackersDeclared, runParams, false);
+        }
+
+        for (final Card c : combat.getAttackers()) {
+            CombatUtil.checkDeclaredAttacker(game, c, combat);
+        }
+
+        game.getTriggerHandler().resetActiveTriggers();
+        game.updateCombatForView();
+        game.fireEvent(new GameEventCombatChanged());
+
+        // Gracefully proceed to Declare Blockers, giving priority to the defending player,
+        // but only if the stack is empty (otherwise the game will crash).
+        game.getStack().addAllTriggeredAbilitiesToStack();
+        if (toDeclareBlockers && game.getStack().isEmpty()) {
+            game.getPhaseHandler().devAdvanceToPhase(PhaseType.COMBAT_DECLARE_BLOCKERS);
+        }
+    }
+
+    private void handleRememberedEntities() {
+        // Remembered: X
+        for (Entry<Card, List<String>> rememberedEnts : cardToRememberedId.entrySet()) {
+            Card c = rememberedEnts.getKey();
+            List<String> ids = rememberedEnts.getValue();
+
+            for (String id : ids) {
+                Card tgt = idToCard.get(Integer.parseInt(id));
+                c.addRemembered(tgt);
+            }
+        }
+
+        // Imprinting: X
+        for (Entry<Card, List<String>> imprintedCards : cardToImprintedId.entrySet()) {
+            Card c = imprintedCards.getKey();
+            List<String> ids = imprintedCards.getValue();
+
+            for (String id : ids) {
+                Card tgt = idToCard.get(Integer.parseInt(id));
+                c.addImprintedCard(tgt);
+            }
+        }
+
+        // Exiled with X
+        for (Entry<Card, String> rememberedEnts : cardToExiledWithId.entrySet()) {
+            Card c = rememberedEnts.getKey();
+            String id = rememberedEnts.getValue();
+
+            Card exiledWith = idToCard.get(Integer.parseInt(id));
+            c.setExiledWith(exiledWith);
+        }
+    }
+
+    private int parseTargetInScript(final String tgtDef) {
+        int tgtID = TARGET_NONE;
+
+        if (tgtDef.equalsIgnoreCase("human")) {
+            tgtID = TARGET_HUMAN;
+        } else if (tgtDef.equalsIgnoreCase("ai")) {
+            tgtID = TARGET_AI;
+        } else {
+            tgtID = Integer.parseInt(tgtDef);
+        }
+
+        return tgtID;
+    }
+
+    private void handleScriptedTargetingForSA(final Game game, final SpellAbility sa, int tgtID) {
+        Player human = game.getPlayers().get(0);
+        Player ai = game.getPlayers().get(1);
+
+        if (tgtID != TARGET_NONE) {
+            switch (tgtID) {
+                case TARGET_HUMAN:
+                    sa.getTargets().add(human);
+                    break;
+                case TARGET_AI:
+                    sa.getTargets().add(ai);
+                    break;
+                default:
+                    sa.getTargets().add(idToCard.get(tgtID));
+                    break;
+            }
+        }
+    }
+
+    private void handleScriptExecution(final Game game) {
+        for (Entry<Card, String> scriptPtr : cardToScript.entrySet()) {
+            Card c = scriptPtr.getKey();
+            String sPtr = scriptPtr.getValue();
+
+            executeScript(game, c, sPtr);
+        }
+    }
+
+    private void executeScript(Game game, Card c, String sPtr) {
+        int tgtID = TARGET_NONE;
+        if (sPtr.contains("->")) {
+            String tgtDef = sPtr.substring(sPtr.lastIndexOf("->") + 2);
+
+            tgtID = parseTargetInScript(tgtDef);
+            sPtr = sPtr.substring(0, sPtr.lastIndexOf("->"));
+        }
+
+        SpellAbility sa = null;
+        if (StringUtils.isNumeric(sPtr)) {
+            int numSA = Integer.parseInt(sPtr);
+            if (c.getSpellAbilities().size() >= numSA) {
+                sa = c.getSpellAbilities().get(numSA);
+            } else {
+                System.err.println("ERROR: Unable to find SA with index " + numSA + " on card " + c + " to execute!");
+            }
+        } else {
+            // Special handling for keyworded abilities
+            if (sPtr.startsWith("KW#")) {
+                String kwName = sPtr.substring(3);
+                FCollectionView<SpellAbility> saList = c.getSpellAbilities();
+
+                if (kwName.equals("Awaken") || kwName.equals("AwakenOnly")) {
+                    // AwakenOnly only creates the Awaken effect, while Awaken precasts the whole spell with Awaken
+                    for (SpellAbility ab : saList) {
+                        if (ab.getDescription().startsWith("Awaken")) {
+                            ab.setActivatingPlayer(c.getController());
+                            ab.getSubAbility().setActivatingPlayer(c.getController());
+                            // target for Awaken is set in its first subability
+                            handleScriptedTargetingForSA(game, ab.getSubAbility(), tgtID);
+                            sa = kwName.equals("AwakenOnly") ? ab.getSubAbility() : ab;
+                        }
+                    }
+                    if (sa == null) {
+                        System.err.println("ERROR: Could not locate keyworded ability Awaken in card " + c + " to execute!");
+                        return;
+                    }
+                }
+            } else {
+                // SVar-based script execution
+                String svarValue = "";
+
+                if (sPtr.startsWith("CustomScript:")) {
+                    // A custom line defined in the game state file
+                    svarValue = sPtr.substring(sPtr.indexOf(":") + 1);
+                } else {
+                    // A SVar from the card script file
+                    if (!c.hasSVar(sPtr)) {
+                        System.err.println("ERROR: Unable to find SVar " + sPtr + " on card " + c + " + to execute!");
+                        return;
+                    }
+
+                    svarValue = c.getSVar(sPtr);
+
+                    if (tgtID != TARGET_NONE && svarValue.contains("| Defined$")) {
+                        // We want a specific target, so try to undefine a predefined target if possible
+                        svarValue = TextUtil.fastReplace(svarValue, "| Defined$", "| Undefined$");
+                        if (tgtID == TARGET_HUMAN || tgtID == TARGET_AI) {
+                            svarValue += " | ValidTgts$ Player";
+                        } else {
+                            svarValue += " | ValidTgts$ Card";
+                        }
+                    }
+                }
+
+                sa = AbilityFactory.getAbility(svarValue, c);
+                if (sa == null) {
+                    System.err.println("ERROR: Unable to generate ability for SVar " + svarValue);
+                }
+            }
+        }
+
+        sa.setActivatingPlayer(c.getController());
+        handleScriptedTargetingForSA(game, sa, tgtID);
+
+        sa.resolve();
+
+        // resolve subabilities
+        SpellAbility subSa = sa.getSubAbility();
+        while (subSa != null) {
+            subSa.resolve();
+            subSa = subSa.getSubAbility();
+        }
+    }
+
+    private void handlePrecastSpells(final Game game) {
+        Player human = game.getPlayers().get(0);
+        Player ai = game.getPlayers().get(1);
+
+        if (precastHuman != null) {
+            String[] spellList = TextUtil.split(precastHuman, ';');
+            for (String spell : spellList) {
+                precastSpellFromCard(spell, human, game);
+            }
+        }
+        if (precastAI != null) {
+            String[] spellList = TextUtil.split(precastAI, ';');
+            for (String spell : spellList) {
+                precastSpellFromCard(spell, ai, game);
+            }
+        }
+    }
+
+    private void precastSpellFromCard(String spellDef, final Player activator, final Game game) {
+        int tgtID = TARGET_NONE;
+        String scriptID = "";
+
+        if (spellDef.contains(":")) {
+            // targeting via -> will be handled in executeScript
+            scriptID = spellDef.substring(spellDef.indexOf(":") + 1);
+            spellDef = spellDef.substring(0, spellDef.indexOf(":"));
+        } else if (spellDef.contains("->")) {
+            String tgtDef = spellDef.substring(spellDef.indexOf("->") + 2);
+            tgtID = parseTargetInScript(tgtDef);
+            spellDef = spellDef.substring(0, spellDef.indexOf("->"));
+        }
+
+        PaperCard pc = StaticData.instance().getCommonCards().getCard(spellDef);
+
+        if (pc == null) {
+            System.err.println("ERROR: Could not find a card with name " + spellDef + " to precast!");
+            return;
+        }
+
+        Card c = Card.fromPaperCard(pc, activator);
+        SpellAbility sa = null;
+
+        if (!scriptID.isEmpty()) {
+            executeScript(game, c, scriptID);
+            return;
+        }
+
+        sa = c.getFirstSpellAbility();
+        sa.setActivatingPlayer(activator);
+
+        handleScriptedTargetingForSA(game, sa, tgtID);
+
+        sa.resolve();
+    }
+
+    private void handleMarkedDamage() {
+        for (Entry<Card, Integer> entry : markedDamage.entrySet()) {
+            Card c = entry.getKey();
+            Integer dmg = entry.getValue();
+
+            c.setDamage(dmg);
+        }
+    }
+
+    private void handleChosenEntities() {
+        // TODO: the AI still gets to choose something (and the notification box pops up) before the
+        // choice is overwritten here. Somehow improve this so that there is at least no notification
+        // about the choice that will be force-changed anyway.
+
+        // Chosen colors
+        for (Entry<Card, List<String>> entry : cardToChosenClrs.entrySet()) {
+            Card c = entry.getKey();
+            List<String> colors = entry.getValue();
+
+            c.setChosenColors(colors);
+        }
+
+        // Chosen type
+        for (Entry<Card, String> entry : cardToChosenType.entrySet()) {
+            Card c = entry.getKey();
+            c.setChosenType(entry.getValue());
+        }
+    }
+
+    private void handleCardAttachments() {
+        // Unattach all permanents first
+        for(Entry<Card, Integer> entry : cardToAttachId.entrySet()) {
+            Card attachedTo = idToCard.get(entry.getValue());
+
+            attachedTo.unEnchantAllCards();
+            attachedTo.unEquipAllCards();
+            for (Card c : attachedTo.getFortifiedBy(true)) {
+                attachedTo.unFortifyCard(c);
+            }
+        }
+
+        // Attach permanents by ID
+        for(Entry<Card, Integer> entry : cardToAttachId.entrySet()) {
+            Card attachedTo = idToCard.get(entry.getValue());
+            Card attacher = entry.getKey();
+
+            if (attacher.isEquipment()) {
+                attacher.equipCard(attachedTo);
+            } else if (attacher.isAura()) {
+                attacher.enchantEntity(attachedTo);
+            } else if (attacher.isFortified()) {
+                attacher.fortifyCard(attachedTo);
+            }
+        }
+    }
+
     private void applyCountersToGameEntity(GameEntity entity, String counterString) {
-        //entity.setCounters(new HashMap<CounterType, Integer>());
+        entity.setCounters(Maps.<CounterType, Integer>newEnumMap(CounterType.class));
         String[] allCounterStrings = counterString.split(",");
         for (final String counterPair : allCounterStrings) {
             String[] pair = counterPair.split("=", 2);
@@ -356,7 +867,6 @@ public abstract class GameState {
 
     private void setupPlayerState(int life, Map<ZoneType, String> cardTexts, final Player p) {
         // Lock check static as we setup player state
-        final Game game = p.getGame();
 
         Map<ZoneType, CardCollectionView> playerCards = new EnumMap<ZoneType, CardCollectionView>(ZoneType.class);
         for (Entry<ZoneType, String> kv : cardTexts.entrySet()) {
@@ -384,9 +894,13 @@ public abstract class GameState {
                     Map<CounterType, Integer> counters = c.getCounters();
                     // Note: Not clearCounters() since we want to keep the counters
                     // var as-is.
-                    c.setCounters(new HashMap<CounterType, Integer>());
+                    c.setCounters(Maps.<CounterType, Integer>newEnumMap(CounterType.class));
                     p.getZone(ZoneType.Hand).add(c);
                     if (c.isAura()) {
+                        // dummy "enchanting" to indicate that the card will be force-attached elsewhere
+                        // (will be overridden later, so the actual value shouldn't matter)
+                        c.setEnchanting(c);
+
                         p.getGame().getAction().moveToPlay(c, null);
                     } else {
                         p.getGame().getAction().moveToPlay(c, null);
@@ -401,25 +915,6 @@ public abstract class GameState {
             }
         }
 
-        game.getTriggerHandler().suppressMode(TriggerType.Unequip);
-
-        for(Entry<Card, Integer> entry : cardToAttachId.entrySet()) {
-            Card attachedTo = idToCard.get(entry.getValue());
-            Card attacher = entry.getKey();
-
-            attachedTo.unEnchantAllCards();
-            attachedTo.unEquipAllCards();
-
-            if (attacher.isEquipment()) {
-                attacher.equipCard(attachedTo);
-            } else if (attacher.isAura()) {
-                attacher.enchantEntity(attachedTo);
-            } else if (attacher.isFortified()) {
-                attacher.fortifyCard(attachedTo);
-            }
-        }
-
-        game.getTriggerHandler().clearSuppression(TriggerType.Unequip);
     }
 
     /**
@@ -453,6 +948,11 @@ public abstract class GameState {
                 c = CardFactory.makeOneToken(CardFactory.TokenInfo.fromString(tokenStr), player);
             } else {
                 PaperCard pc = StaticData.instance().getCommonCards().getCard(cardinfo[0], setCode);
+                if (pc == null) {
+                    System.err.println("ERROR: Tried to create a non-existent card named " + cardinfo[0] + " (set: " + (setCode == null ? "any" : setCode) + ") when loading game state!");
+                    continue;
+                }
+
                 c = Card.fromPaperCard(pc, player);
                 if (setCode != null) {
                     hasSetCurSet = true;
@@ -463,6 +963,13 @@ public abstract class GameState {
             for (final String info : cardinfo) {
                 if (info.startsWith("Tapped")) {
                     c.tap();
+                } else if (info.startsWith("Renowned")) {
+                    c.setRenowned(true);
+                } else if (info.startsWith("Monstrous:")) {
+                    c.setMonstrous(true);
+                    c.setMonstrosityNum(Integer.parseInt(info.substring((info.indexOf(':') + 1))));
+                } else if (info.startsWith("PhasedOut")) {
+                    c.setPhasedOut(true);
                 } else if (info.startsWith("Counters:")) {
                     applyCountersToGameEntity(c, info.substring(info.indexOf(':') + 1));
                 } else if (info.startsWith("SummonSick")) {
@@ -474,6 +981,10 @@ public abstract class GameState {
                     }
                 } else if (info.startsWith("Transformed")) {
                     c.setState(CardStateName.Transformed, true);
+                } else if (info.startsWith("Flipped")) {
+                    c.setState(CardStateName.Flipped, true);
+                } else if (info.startsWith("Meld")) {
+                    c.setState(CardStateName.Meld, true);
                 } else if (info.startsWith("IsCommander")) {
                     // TODO: This doesn't seem to properly restore the ability to play the commander. Why?
                     c.setCommander(true);
@@ -488,6 +999,28 @@ public abstract class GameState {
                 } else if (info.startsWith("Ability:")) {
                     String abString = info.substring(info.indexOf(':') + 1).toLowerCase();
                     c.addSpellAbility(AbilityFactory.getAbility(abilityString.get(abString), c));
+                } else if (info.startsWith("Damage:")) {
+                    int dmg = Integer.parseInt(info.substring(info.indexOf(':') + 1));
+                    markedDamage.put(c, dmg);
+                } else if (info.startsWith("ChosenColor:")) {
+                    cardToChosenClrs.put(c, Arrays.asList(info.substring(info.indexOf(':') + 1).split(",")));
+                } else if (info.startsWith("ChosenType:")) {
+                    cardToChosenType.put(c, info.substring(info.indexOf(':') + 1));
+                } else if (info.startsWith("ExecuteScript:")) {
+                    cardToScript.put(c, info.substring(info.indexOf(':') + 1));
+                } else if (info.startsWith("RememberedCards:")) {
+                    cardToRememberedId.put(c, Arrays.asList(info.substring(info.indexOf(':') + 1).split(",")));
+                } else if (info.startsWith("Imprinting:")) {
+                    cardToImprintedId.put(c, Arrays.asList(info.substring(info.indexOf(':') + 1).split(",")));
+                } else if (info.startsWith("ExiledWith:")) {
+                    cardToExiledWithId.put(c, info.substring(info.indexOf(':') + 1));
+                } else if (info.startsWith("Attacking")) {
+                    if (info.contains(":")) {
+                        int id = Integer.parseInt(info.substring(info.indexOf(':') + 1));
+                        cardAttackMap.put(c, idToCard.get(id));
+                    } else {
+                        cardAttackMap.put(c, null);
+                    }
                 }
             }
 

forge-ai/src/main/java/forge/ai/LobbyPlayerAi.java

@@ -2,7 +2,6 @@ package forge.ai;
 
 import java.util.Set;
 
-import forge.AIOption;
 import forge.LobbyPlayer;
 import forge.game.Game;
 import forge.game.player.IGameEntitiesFactory;

forge-ai/src/main/java/forge/ai/PlayerControllerAi.java

@@ -1,12 +1,5 @@
 package forge.ai;
 
-import java.security.InvalidParameterException;
-import java.util.*;
-
-import org.apache.commons.lang3.StringUtils;
-import org.apache.commons.lang3.tuple.ImmutablePair;
-import org.apache.commons.lang3.tuple.Pair;
-
 import com.esotericsoftware.minlog.Log;
 import com.google.common.base.Predicate;
 import com.google.common.base.Predicates;
@@ -14,9 +7,9 @@ import com.google.common.collect.Iterables;
 import com.google.common.collect.ListMultimap;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Multimap;
-
 import forge.LobbyPlayer;
 import forge.ai.ability.ProtectAi;
+import forge.card.CardStateName;
 import forge.card.ColorSet;
 import forge.card.ICardFace;
 import forge.card.MagicColor;
@@ -39,14 +32,9 @@ import forge.game.mana.Mana;
 import forge.game.mana.ManaCostBeingPaid;
 import forge.game.phase.PhaseHandler;
 import forge.game.phase.PhaseType;
-import forge.game.player.DelayedReveal;
+import forge.game.player.*;
-import forge.game.player.Player;
-import forge.game.player.PlayerActionConfirmMode;
-import forge.game.player.PlayerController;
-import forge.game.player.PlayerView;
 import forge.game.replacement.ReplacementEffect;
 import forge.game.spellability.*;
-import forge.game.trigger.Trigger;
 import forge.game.trigger.WrappedAbility;
 import forge.game.zone.ZoneType;
 import forge.item.PaperCard;
@@ -55,6 +43,12 @@ import forge.util.ITriggerEvent;
 import forge.util.MyRandom;
 import forge.util.collect.FCollection;
 import forge.util.collect.FCollectionView;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.lang3.tuple.ImmutablePair;
+import org.apache.commons.lang3.tuple.Pair;
+
+import java.security.InvalidParameterException;
+import java.util.*;
 
 
 /** 
@@ -115,7 +109,23 @@ public class PlayerControllerAi extends PlayerController {
         if (ability.getApi() != null) {
             switch (ability.getApi()) {
                 case ChooseNumber:
-                    return ability.getActivatingPlayer().isOpponentOf(player) ? 0 : ComputerUtilMana.determineLeftoverMana(ability, player);
+                    Player payingPlayer = ability.getActivatingPlayer();
+                    String logic = ability.getParamOrDefault("AILogic", "");
+                    boolean anyController = logic.equals("MaxForAnyController");
+
+                    if (logic.startsWith("PowerLeakMaxMana.") && ability.getHostCard().isEnchantingCard()) {
+                        // For cards like Power Leak, the payer will be the owner of the enchanted card
+                        // TODO: is there any way to generalize this and avoid a special exclusion?
+                        payingPlayer = ability.getHostCard().getEnchantingCard().getController();
+                    }
+
+                    int number = ComputerUtilMana.determineLeftoverMana(ability, player);
+
+                    if (logic.startsWith("MaxMana.") || logic.startsWith("PowerLeakMaxMana.")) {
+                        number = Math.min(number, Integer.parseInt(logic.substring(logic.indexOf(".") + 1)));
+                    }
+
+                    return payingPlayer.isOpponentOf(player) && !anyController ? 0 : number;
                 case BidLife:
                     return 0;
                 default:
@@ -179,8 +189,8 @@ public class PlayerControllerAi extends PlayerController {
 
     @Override
     public boolean confirmTrigger(WrappedAbility wrapper, Map<String, String> triggerParams, boolean isMandatory) {
-	final SpellAbility sa = wrapper.getWrappedAbility();
+        final SpellAbility sa = wrapper.getWrappedAbility();
-	final Trigger regtrig = wrapper.getTrigger();
+        //final Trigger regtrig = wrapper.getTrigger();
         if (ComputerUtilAbility.getAbilitySourceName(sa).equals("Deathmist Raptor")) {
             return true;
         }
@@ -282,8 +292,43 @@ public class PlayerControllerAi extends PlayerController {
     }
 
     @Override
-    public CardCollectionView orderMoveToZoneList(CardCollectionView cards, ZoneType destinationZone) {
+    public CardCollectionView orderMoveToZoneList(CardCollectionView cards, ZoneType destinationZone, SpellAbility source) {
-        //TODO Add logic for AI ordering here
+        //TODO Add more logic for AI ordering here
+
+        // In presence of Volrath's Shapeshifter in deck, try to place the best creature on top of the graveyard
+        if (destinationZone == ZoneType.Graveyard) {
+            if (!CardLists.filter(game.getCardsInGame(), new Predicate<Card>() {
+                @Override
+                public boolean apply(Card card) {
+                    // need a custom predicate here since Volrath's Shapeshifter may have a different name OTB
+                    return card.getName().equals("Volrath's Shapeshifter")
+                            || card.getStates().contains(CardStateName.OriginalText) && card.getState(CardStateName.OriginalText).getName().equals("Volrath's Shapeshifter");
+                }
+            }).isEmpty()) {
+                int bestValue = 0;
+                Card bestCreature = null;
+                for (Card c : cards) {
+                    int curValue = ComputerUtilCard.evaluateCreature(c);
+                    if (c.isCreature() && curValue > bestValue) {
+                        bestValue = curValue;
+                        bestCreature = c;
+                    }
+                }
+
+                if (bestCreature != null) {
+                    CardCollection reordered = new CardCollection();
+                    for (Card c : cards) {
+                        if (!c.equals(bestCreature)) {
+                            reordered.add(c);
+                        }
+                    }
+                    reordered.add(bestCreature);
+                    return reordered;
+                }
+            }
+        }
+
+        // Default: return with the same order as was passed into this method
         return cards;
     }
 
@@ -844,21 +889,40 @@ public class PlayerControllerAi extends PlayerController {
     @Override
     public String chooseCardName(SpellAbility sa, Predicate<ICardFace> cpp, String valid, String message) {
         if (sa.hasParam("AILogic")) {
+            CardCollectionView aiLibrary = player.getCardsIn(ZoneType.Library);
+            CardCollectionView oppLibrary = ComputerUtil.getOpponentFor(player).getCardsIn(ZoneType.Library);
+            final Card source = sa.getHostCard();
             final String logic = sa.getParam("AILogic");
+
+            if (source != null && source.getState(CardStateName.Original).hasIntrinsicKeyword("Hidden agenda")) {
+                // If any Conspiracies are present, try not to choose the same name twice
+                // (otherwise the AI will spam the same name)
+                for (Card consp : player.getCardsIn(ZoneType.Command)) {
+                    if (consp.getState(CardStateName.Original).hasIntrinsicKeyword("Hidden agenda")) {
+                        String chosenName = consp.getNamedCard();
+                        if (!chosenName.isEmpty()) {
+                            aiLibrary = CardLists.filter(aiLibrary, Predicates.not(CardPredicates.nameEquals(chosenName)));
+                        }
+                    }
+                }
+            }
+
             if (logic.equals("MostProminentInComputerDeck")) {
-                return ComputerUtilCard.getMostProminentCardName(player.getCardsIn(ZoneType.Library));
+                return ComputerUtilCard.getMostProminentCardName(aiLibrary);
             } else if (logic.equals("MostProminentInHumanDeck")) {
-                return ComputerUtilCard.getMostProminentCardName(player.getOpponent().getCardsIn(ZoneType.Library));
+                return ComputerUtilCard.getMostProminentCardName(oppLibrary);
             } else if (logic.equals("MostProminentCreatureInComputerDeck")) {
-                CardCollectionView cards = CardLists.getValidCards(player.getCardsIn(ZoneType.Library), "Creature", player, sa.getHostCard());
+                CardCollectionView cards = CardLists.getValidCards(aiLibrary, "Creature", player, sa.getHostCard());
                 return ComputerUtilCard.getMostProminentCardName(cards);
             } else if (logic.equals("BestCreatureInComputerDeck")) {
-                return ComputerUtilCard.getBestCreatureAI(player.getCardsIn(ZoneType.Library)).getName();
+                return ComputerUtilCard.getBestCreatureAI(aiLibrary).getName();
             } else if (logic.equals("RandomInComputerDeck")) {
-                return Aggregates.random(player.getCardsIn(ZoneType.Library)).getName();
+                return Aggregates.random(aiLibrary).getName();
             } else if (logic.equals("MostProminentSpellInComputerDeck")) {
-                CardCollectionView cards = CardLists.getValidCards(player.getCardsIn(ZoneType.Library), "Card.Instant,Card.Sorcery", player, sa.getHostCard());
+                CardCollectionView cards = CardLists.getValidCards(aiLibrary, "Card.Instant,Card.Sorcery", player, sa.getHostCard());
                 return ComputerUtilCard.getMostProminentCardName(cards);
+            } else if (logic.equals("CursedScroll")) {
+                return SpecialCardAi.CursedScroll.chooseCard(player, sa);
             }
         } else {
             CardCollectionView list = CardLists.filterControlledBy(game.getCardsInGame(), player.getOpponents());

forge-ai/src/main/java/forge/ai/SpecialCardAi.java

@@ -17,28 +17,20 @@
  */
 package forge.ai;
 
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-
 import com.google.common.base.Predicate;
 import com.google.common.base.Predicates;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
-
 import forge.card.ColorSet;
 import forge.card.MagicColor;
 import forge.card.mana.ManaCost;
 import forge.game.Game;
+import forge.game.ability.AbilityFactory;
 import forge.game.ability.AbilityUtils;
 import forge.game.ability.ApiType;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
+import forge.game.combat.Combat;
-import forge.game.card.CardCollectionView;
+import forge.game.combat.CombatUtil;
-import forge.game.card.CardFactoryUtil;
-import forge.game.card.CardLists;
-import forge.game.card.CardPredicates;
-import forge.game.card.CounterType;
 import forge.game.cost.CostPart;
 import forge.game.mana.ManaCostBeingPaid;
 import forge.game.phase.PhaseHandler;
@@ -46,8 +38,18 @@ import forge.game.phase.PhaseType;
 import forge.game.player.Player;
 import forge.game.player.PlayerPredicates;
 import forge.game.spellability.SpellAbility;
+import forge.game.staticability.StaticAbility;
+import forge.game.trigger.Trigger;
 import forge.game.zone.ZoneType;
 import forge.util.Aggregates;
+import forge.util.TextUtil;
+import forge.util.maps.LinkedHashMapToAmount;
+import forge.util.maps.MapToAmount;
+import org.apache.commons.lang3.tuple.Pair;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
 
 /**
  * Special logic for individual cards
@@ -73,8 +75,8 @@ public class SpecialCardAi {
 
     // Black Lotus and Lotus Bloom
     public static class BlackLotus {
-        public static boolean consider(Player ai, SpellAbility sa, ManaCostBeingPaid cost) {
+        public static boolean consider(final Player ai, final SpellAbility sa, final ManaCostBeingPaid cost) {
-            CardCollection manaSources = ComputerUtilMana.getAvailableMana(ai, true);
+            CardCollection manaSources = ComputerUtilMana.getAvailableManaSources(ai, true);
             int numManaSrcs = manaSources.size();
 
             CardCollection allCards = CardLists.filter(ai.getAllCards(), Arrays.asList(CardPredicates.Presets.NON_TOKEN,
@@ -102,7 +104,7 @@ public class SpecialCardAi {
 
     // Bonds of Faith
     public static class BondsOfFaith {
-        public static Card getBestAttachTarget(final Player ai, SpellAbility sa, List<Card> list) {
+        public static Card getBestAttachTarget(final Player ai, final SpellAbility sa, final List<Card> list) {
             Card chosen = null;
             
             List<Card> aiHumans = CardLists.filter(list, new Predicate<Card>() {
@@ -140,9 +142,25 @@ public class SpecialCardAi {
         }
     }
 
+    // Chain of Acid
+    public static class ChainOfAcid {
+        public static boolean consider(final Player ai, final SpellAbility sa) {
+            List<Card> AiLandsOnly = CardLists.filter(ai.getCardsIn(ZoneType.Battlefield),
+                    CardPredicates.Presets.LANDS);
+            List<Card> OppPerms = CardLists.filter(ai.getOpponents().getCardsIn(ZoneType.Battlefield),
+                    Predicates.not(CardPredicates.Presets.CREATURES));
+
+            // TODO: improve this logic (currently the AI has difficulty evaluating non-creature permanents,
+            // which it can only distinguish by their CMC, considering >CMC higher value).
+            // Currently ensures that the AI will still have lands provided that the human player goes to
+            // destroy all the AI's lands in order (to avoid manalock).
+            return !OppPerms.isEmpty() && AiLandsOnly.size() > OppPerms.size() + 2;
+        }
+    }
+
     // Chain of Smog
     public static class ChainOfSmog {
-        public static boolean consider(Player ai, SpellAbility sa) {
+        public static boolean consider(final Player ai, final SpellAbility sa) {
             if (ai.getCardsIn(ZoneType.Hand).isEmpty()) {
                 // to avoid failure to add to stack, provide a legal target opponent first (choosing random at this point)
                 // TODO: this makes the AI target opponents with 0 cards in hand, but bailing from here causes a
@@ -165,11 +183,66 @@ public class SpecialCardAi {
         }
     }
 
+    // Cursed Scroll
+    public static class CursedScroll {
+        public static boolean consider(final Player ai, final SpellAbility sa) {
+            CardCollectionView hand = ai.getCardsIn(ZoneType.Hand);
+            if (hand.isEmpty()) {
+                return false;
+            }
+
+            // For now, see if all cards in hand have the same name, and then proceed if true
+            return CardLists.filter(hand, CardPredicates.nameEquals(hand.getFirst().getName())).size() == hand.size();
+        }
+
+        public static String chooseCard(final Player ai, final SpellAbility sa) {
+            int maxCount = 0;
+            Card best = null;
+            CardCollectionView hand = ai.getCardsIn(ZoneType.Hand);
+
+            for (Card c : ai.getCardsIn(ZoneType.Hand)) {
+                int count = CardLists.filter(hand, CardPredicates.nameEquals(c.getName())).size();
+                if (count > maxCount) {
+                    maxCount = count;
+                    best = c;
+                }
+            }
+
+            return best.getName();
+        }
+    }
+
+    // Deathgorge Scavenger
+    public static class DeathgorgeScavenger {
+        public static boolean consider(final Player ai, final SpellAbility sa) {
+            Card worstCreat = ComputerUtilCard.getWorstAI(CardLists.filter(ai.getOpponents().getCardsIn(ZoneType.Graveyard), CardPredicates.Presets.CREATURES));
+            Card worstNonCreat = ComputerUtilCard.getWorstAI(CardLists.filter(ai.getOpponents().getCardsIn(ZoneType.Graveyard), Predicates.not(CardPredicates.Presets.CREATURES)));
+            if (worstCreat == null) {
+                worstCreat = ComputerUtilCard.getWorstAI(CardLists.filter(ai.getCardsIn(ZoneType.Graveyard), CardPredicates.Presets.CREATURES));
+            }
+            if (worstNonCreat == null) {
+                worstNonCreat = ComputerUtilCard.getWorstAI(CardLists.filter(ai.getCardsIn(ZoneType.Graveyard), Predicates.not(CardPredicates.Presets.CREATURES)));
+            }
+
+            sa.resetTargets();
+            if (worstCreat != null && ai.getLife() <= ai.getStartingLife() / 4) {
+                sa.getTargets().add(worstCreat);
+            } else if (worstNonCreat != null && ai.getGame().getCombat() != null
+                    && ai.getGame().getCombat().isAttacking(sa.getHostCard())) {
+                sa.getTargets().add(worstNonCreat);
+            } else if (worstCreat != null) {
+                sa.getTargets().add(worstCreat);
+            }
+
+            return sa.getTargets().getNumTargeted() > 0;
+        }
+    }
+
     // Desecration Demon
     public static class DesecrationDemon {
         private static final int demonSacThreshold = Integer.MAX_VALUE; // if we're in dire conditions, sac everything from worst to best hoping to find an answer
 
-        public static boolean considerSacrificingCreature(Player ai, SpellAbility sa) {
+        public static boolean considerSacrificingCreature(final Player ai, final SpellAbility sa) {
             CardCollection flyingCreatures = CardLists.filter(ai.getCardsIn(ZoneType.Battlefield), Predicates.and(CardPredicates.Presets.UNTAPPED, Predicates.or(CardPredicates.hasKeyword("Flying"), CardPredicates.hasKeyword("Reach"))));
             boolean hasUsefulBlocker = false;
 
@@ -193,7 +266,7 @@ public class SpecialCardAi {
 
     // Donate
     public static class Donate {
-        public static boolean considerTargetingOpponent(Player ai, SpellAbility sa) {
+        public static boolean considerTargetingOpponent(final Player ai, final SpellAbility sa) {
             final Card donateTarget = ComputerUtil.getCardPreference(ai, sa.getHostCard(), "DonateMe", CardLists.filter(
                     ai.getCardsIn(ZoneType.Battlefield).threadSafeIterable(), CardPredicates.hasSVar("DonateMe")));
             if (donateTarget != null) {
@@ -229,7 +302,7 @@ public class SpecialCardAi {
             return false;
         }
 
-        public static boolean considerDonatingPermanent(Player ai, SpellAbility sa) {
+        public static boolean considerDonatingPermanent(final Player ai, final SpellAbility sa) {
             Card donateTarget = ComputerUtil.getCardPreference(ai, sa.getHostCard(), "DonateMe", CardLists.filter(ai.getCardsIn(ZoneType.Battlefield).threadSafeIterable(), CardPredicates.hasSVar("DonateMe")));
             if (donateTarget != null) {
                 sa.resetTargets();
@@ -243,9 +316,159 @@ public class SpecialCardAi {
         }
     }
 
+    // Electrostatic Pummeler
+    public static class ElectrostaticPummeler {
+        public static boolean consider(final Player ai, final SpellAbility sa) {
+            final Card source = sa.getHostCard();
+            Game game = ai.getGame();
+            Combat combat = game.getCombat();
+            Pair<Integer, Integer> predictedPT = getPumpedPT(ai, source.getNetCombatDamage(), source.getNetToughness());
+
+            // Try to save the Pummeler from death by pumping it if it's threatened with a damage spell
+            if (ComputerUtil.predictThreatenedObjects(ai, null, true).contains(source)) {
+                SpellAbility saTop = game.getStack().peekAbility();
+
+                if (saTop.getApi() == ApiType.DealDamage || saTop.getApi() == ApiType.DamageAll) {
+                    int dmg = AbilityUtils.calculateAmount(saTop.getHostCard(), saTop.getParam("NumDmg"), saTop);
+                    if (source.getNetToughness() - source.getDamage() <= dmg && predictedPT.getRight() - source.getDamage() > dmg)
+                    return true;
+                }
+            }
+
+            // Do not activate if damage will be prevented
+            if (source.staticDamagePrevention(predictedPT.getLeft(), source, true, true) == 0) {
+                return false;
+            }
+
+            // Activate Electrostatic Pummeler's pump only as a combat trick
+            if (game.getPhaseHandler().is(PhaseType.COMBAT_BEGIN)) {
+                if (predictOverwhelmingDamage(ai, sa)) {
+                    // We'll try to deal lethal trample/unblocked damage, so remember the card for attack
+                    // and wait until declare blockers step.
+                    AiCardMemory.rememberCard(ai, source, AiCardMemory.MemorySet.MANDATORY_ATTACKERS);
+                    return false;
+                }
+            } else if (!game.getPhaseHandler().is(PhaseType.COMBAT_DECLARE_BLOCKERS)) {
+                return false;
+            }
+
+            if (combat == null || !(combat.isAttacking(source) || combat.isBlocking(source))) {
+                return false;
+            }
+
+            boolean isBlocking = combat.isBlocking(source);
+            boolean cantDie = ComputerUtilCombat.attackerCantBeDestroyedInCombat(ai, source);
+
+            CardCollection opposition = isBlocking ? combat.getAttackersBlockedBy(source) : combat.getBlockers(source);
+            int oppP = Aggregates.sum(opposition, CardPredicates.Accessors.fnGetAttack);
+            int oppT = Aggregates.sum(opposition, CardPredicates.Accessors.fnGetNetToughness);
+
+            boolean oppHasFirstStrike = false;
+            boolean oppCantDie = true;
+            boolean unblocked = opposition.isEmpty();
+            boolean canTrample = source.hasKeyword("Trample");
+
+            if (!isBlocking && combat.getDefenderByAttacker(source) instanceof Card) {
+                int loyalty = ((Card)combat.getDefenderByAttacker(source)).getCounters(CounterType.LOYALTY);
+                int totalDamageToPW = 0;
+                for (Card atk : (combat.getAttackersOf(combat.getDefenderByAttacker(source)))) {
+                    if (combat.isUnblocked(atk)) {
+                        totalDamageToPW += atk.getNetCombatDamage();
+                    }
+                }
+                if (totalDamageToPW >= oppT + loyalty) {
+                    // Already enough damage to take care of the planeswalker
+                    return false;
+                }
+                if ((unblocked || canTrample) && predictedPT.getLeft() >= oppT + loyalty) {
+                    // Can pump to kill the planeswalker, go for it
+                    return true;
+                }
+
+            }
+
+            for (Card c : opposition) {
+                if (c.hasKeyword("First Strike") || c.hasKeyword("Double Strike")) {
+                    oppHasFirstStrike = true;
+                }
+                if (!ComputerUtilCombat.attackerCantBeDestroyedInCombat(c.getController(), c)) {
+                    oppCantDie = false;
+                }
+            }
+
+            if (!isBlocking) {
+                int oppLife = combat.getDefendingPlayerRelatedTo(source).getLife();
+                if (((unblocked || canTrample) && (predictedPT.getLeft() - oppT > oppLife / 2))
+                        || (canTrample && predictedPT.getLeft() - oppT > 0 && predictedPT.getRight() > oppP)) {
+                    // We can deal a lot of damage (either a lot of damage directly to the opponent,
+                    // or kill the blocker(s) and damage the opponent at the same time, so go for it
+                    AiCardMemory.rememberCard(ai, source, AiCardMemory.MemorySet.MANDATORY_ATTACKERS);
+                    return true;
+                }
+            }
+
+            if (predictedPT.getRight() - source.getDamage() <= oppP && oppHasFirstStrike && !cantDie) {
+                // Can't survive first strike or double strike, don't pump
+                return false;
+            }
+            if (predictedPT.getLeft() < oppT && (!cantDie || predictedPT.getRight() - source.getDamage() <= oppP)) {
+                // Can't pump enough to kill the blockers and survive, don't pump
+                return false;
+            }
+            if (source.getNetCombatDamage() > oppT && source.getNetToughness() > oppP) {
+                // Already enough to kill the blockers and survive, don't overpump
+                return false;
+            }
+            if (oppCantDie && !source.hasKeyword("Trample") && !source.hasKeyword("Wither")
+                    && !source.hasKeyword("Infect") && predictedPT.getLeft() <= oppT) {
+                // Can't kill or cripple anyone, as well as can't Trample over, so don't pump
+                return false;
+            }
+
+            // If we got here, it should be a favorable combat pump, resulting in at least one
+            // opposing creature dying, and hopefully with the Pummeler surviving combat.
+            return true;
+        }
+
+        public static boolean predictOverwhelmingDamage(final Player ai, final SpellAbility sa) {
+            final Card source = sa.getHostCard();
+            int oppLife = ai.getWeakestOpponent().getLife();
+            CardCollection oppInPlay = ai.getWeakestOpponent().getCreaturesInPlay();
+            CardCollection potentialBlockers = new CardCollection();
+
+            for (Card b : oppInPlay) {
+                if (CombatUtil.canBlock(sa.getHostCard(), b)) {
+                    potentialBlockers.add(b);
+                }
+            }
+
+            Pair<Integer, Integer> predictedPT = getPumpedPT(ai, source.getNetCombatDamage(), source.getNetToughness());
+            int oppT = Aggregates.sum(potentialBlockers, CardPredicates.Accessors.fnGetNetToughness);
+
+            if (potentialBlockers.isEmpty() || (sa.getHostCard().hasKeyword("Trample") && predictedPT.getLeft() - oppT >= oppLife)) {
+                return true;
+            }
+
+            return false;
+        }
+
+        public static Pair<Integer, Integer> getPumpedPT(Player ai, int power, int toughness) {
+            int energy = ai.getCounters(CounterType.ENERGY);
+            if (energy > 0) {
+                int numActivations = energy / 3;
+                for (int i = 0; i < numActivations; i++) {
+                    power *= 2;
+                    toughness *= 2;
+                }
+            }
+
+            return Pair.of(power, toughness);
+        }
+    }
+
     // Force of Will
     public static class ForceOfWill {
-        public static boolean consider(Player ai, SpellAbility sa) {
+        public static boolean consider(final Player ai, final SpellAbility sa) {
             CardCollection blueCards = CardLists.filter(ai.getCardsIn(ZoneType.Hand), CardPredicates.isColor(MagicColor.BLUE));
 
             boolean isExileMode = false;
@@ -272,8 +495,9 @@ public class SpecialCardAi {
         }
     }
 
+    // Guilty Conscience
     public static class GuiltyConscience {
-        public static Card getBestAttachTarget(final Player ai, SpellAbility sa, List<Card> list) {
+        public static Card getBestAttachTarget(final Player ai, final SpellAbility sa, final List<Card> list) {
             Card chosen = null;
             
             List<Card> aiStuffies = CardLists.filter(list, new Predicate<Card>() {
@@ -308,10 +532,148 @@ public class SpecialCardAi {
         }
     }
 
+    // Intuition (and any other card that might potentially let you pick N cards from the library,
+    // one of which will then be picked for you by the opponent)
+    public static class Intuition {
+        public static CardCollection considerMultiple(final Player ai, final SpellAbility sa) {
+            if (ai.getController().isAI()) {
+                if (!((PlayerControllerAi) ai.getController()).getAi().getBooleanProperty(AiProps.INTUITION_ALTERNATIVE_LOGIC)) {
+                    return new CardCollection(); // fall back to standard ChangeZoneAi considerations
+                }
+            }
+
+            int changeNum = AbilityUtils.calculateAmount(sa.getHostCard(), sa.getParam("ChangeNum"), sa);
+            CardCollection lib = CardLists.filter(ai.getCardsIn(ZoneType.Library),
+                    Predicates.not(CardPredicates.nameEquals(sa.getHostCard().getName())));
+            Collections.sort(lib, CardLists.CmcComparatorInv);
+
+            // Additional cards which are difficult to auto-classify but which are generally good to Intuition for
+            List<String> highPriorityNamedCards = Lists.newArrayList("Accumulated Knowledge", "Take Inventory");
+
+            // figure out how many of each card we have in deck
+            MapToAmount<String> cardAmount = new LinkedHashMapToAmount<>();
+            for (Card c : lib) {
+                cardAmount.add(c.getName());
+            }
+
+            // Trix: see if we can complete the combo (if it looks like we might win shortly or if we need to get a Donate stat)
+            boolean donateComboMightWin = false;
+            int numIllusionsOTB = CardLists.filter(ai.getCardsIn(ZoneType.Battlefield), CardPredicates.nameEquals("Illusions of Grandeur")).size();
+            if (ai.getOpponentsSmallestLifeTotal() < 20 || numIllusionsOTB > 0) {
+                donateComboMightWin = true;
+                int numIllusionsInHand = CardLists.filter(ai.getCardsIn(ZoneType.Hand), CardPredicates.nameEquals("Illusions of Grandeur")).size();
+                int numDonateInHand = CardLists.filter(ai.getCardsIn(ZoneType.Hand), CardPredicates.nameEquals("Donate")).size();
+                int numIllusionsInLib = CardLists.filter(ai.getCardsIn(ZoneType.Library), CardPredicates.nameEquals("Illusions of Grandeur")).size();
+                int numDonateInLib = CardLists.filter(ai.getCardsIn(ZoneType.Library), CardPredicates.nameEquals("Donate")).size();
+                CardCollection comboList = new CardCollection();
+                if ((numIllusionsInHand > 0 || numIllusionsOTB > 0) && numDonateInHand == 0 && numDonateInLib >= 3) {
+                    for (Card c : lib) {
+                        if (c.getName().equals("Donate")) {
+                            comboList.add(c);
+                        }
+                    }
+                    return comboList;
+                } else if (numDonateInHand > 0 && numIllusionsInHand == 0 && numIllusionsInLib >= 3) {
+                    for (Card c : lib) {
+                        if (c.getName().equals("Illusions of Grandeur")) {
+                            comboList.add(c);
+                        }
+                    }
+                    return comboList;
+                }
+            }
+
+            // Create a priority list for cards that we have no more than 4 of and that are not lands
+            CardCollection libPriorityList = new CardCollection();
+            CardCollection libHighPriorityList = new CardCollection();
+            CardCollection libLowPriorityList = new CardCollection();
+            List<String> processed = Lists.newArrayList();
+            for (int i = 4; i > 0; i--) {
+                for (Card c : lib) {
+                    if (!donateComboMightWin && (c.getName().equals("Illusions of Grandeur") || c.getName().equals("Donate"))) {
+                        // Probably not worth putting two of the combo pieces into the graveyard
+                        // since one Illusions-Donate is likely to not be enough
+                        continue;
+                    }
+                    if (cardAmount.get(c.getName()) == i && !c.isLand() && !processed.contains(c.getName())) {
+                        // if it's a card that is generally good to place in the graveyard, also add it
+                        // to the mix
+                        boolean canRetFromGrave = false;
+                        String name = c.getName().replace(',', ';');
+                        for (Trigger t : c.getTriggers()) {
+                            SpellAbility ab = null;
+                            if (t.hasParam("Execute")) {
+                                ab = AbilityFactory.getAbility(c.getSVar(t.getParam("Execute")), c);
+                            }
+                            if (ab == null) { continue; }
+
+                            if (ab.getApi() == ApiType.ChangeZone
+                                    && "Self".equals(ab.getParam("Defined"))
+                                    && "Graveyard".equals(ab.getParam("Origin"))
+                                    && "Battlefield".equals(ab.getParam("Destination"))) {
+                                canRetFromGrave = true;
+                            }
+                            if (ab.getApi() == ApiType.ChangeZoneAll
+                                    && TextUtil.concatNoSpace("Creature.named", name).equals(ab.getParam("ChangeType"))
+                                    && "Graveyard".equals(ab.getParam("Origin"))
+                                    && "Battlefield".equals(ab.getParam("Destination"))) {
+                                canRetFromGrave = true;
+                            }
+                        }
+                        boolean isGoodToPutInGrave = c.hasSVar("DiscardMe") || canRetFromGrave
+                                || (ComputerUtil.isPlayingReanimator(ai) && c.isCreature());
+
+                        for (Card c1 : lib) {
+                            if (c1.getName().equals(c.getName())) {
+                                if (CardLists.filter(ai.getCardsIn(ZoneType.Hand), CardPredicates.nameEquals(c1.getName())).isEmpty()
+                                        && ComputerUtilMana.hasEnoughManaSourcesToCast(c1.getFirstSpellAbility(), ai)) {
+                                    // Try not to search for things we already have in hand or that we can't cast
+                                    libPriorityList.add(c1);
+                                } else {
+                                    libLowPriorityList.add(c1);
+                                }
+                                if (isGoodToPutInGrave || highPriorityNamedCards.contains(c.getName())) {
+                                    libHighPriorityList.add(c1);
+                                }
+                            }
+                        }
+                        processed.add(c.getName());
+                    }
+                }
+            }
+
+            // If we're playing Reanimator, we're really interested just in the highest CMC spells, not the
+            // ones we necessarily have multiples of
+            if (ComputerUtil.isPlayingReanimator(ai)) {
+                Collections.sort(libHighPriorityList, CardLists.CmcComparatorInv);
+            }
+
+            // Otherwise, try to grab something that is hopefully decent to grab, in priority order
+            CardCollection chosen = new CardCollection();
+            if (libHighPriorityList.size() >= changeNum) {
+                for (int i = 0; i < changeNum; i++) {
+                    chosen.add(libHighPriorityList.get(i));
+                }
+            } else if (libPriorityList.size() >= changeNum) {
+                for (int i = 0; i < changeNum; i++) {
+                    chosen.add(libPriorityList.get(i));
+                }
+            } else if (libLowPriorityList.size() >= changeNum) {
+                for (int i = 0; i < changeNum; i++) {
+                    chosen.add(libLowPriorityList.get(i));
+                }
+            }
+
+            return chosen;
+        }
+    }
+
     // Living Death (and possibly other similar cards using AILogic LivingDeath)
     public static class LivingDeath {
-        public static boolean consider(Player ai, SpellAbility sa) {
+        public static boolean consider(final Player ai, final SpellAbility sa) {
             int aiBattlefieldPower = 0, aiGraveyardPower = 0;
+            int threshold = 320; // approximately a 4/4 Flying creature worth of extra value
+
             CardCollection aiCreaturesInGY = CardLists.filter(ai.getZone(ZoneType.Graveyard).getCards(), CardPredicates.Presets.CREATURES);
 
             if (aiCreaturesInGY.isEmpty()) {
@@ -348,13 +710,67 @@ public class SpecialCardAi {
             }
 
             // if we get more value out of this than our opponent does (hopefully), go for it
-            return (aiGraveyardPower - aiBattlefieldPower) > (oppGraveyardPower - oppBattlefieldPower);
+            return (aiGraveyardPower - aiBattlefieldPower) > (oppGraveyardPower - oppBattlefieldPower + threshold);
+        }
+    }
+
+    // Mairsil, the Pretender
+    public static class MairsilThePretender {
+        // Scan the fetch list for a card with at least one activated ability.
+        // TODO: can be improved to a full consider(sa, ai) logic which would scan the graveyard first and hand last
+        public static Card considerCardFromList(final CardCollection fetchList) {
+            for (Card c : CardLists.filter(fetchList, Predicates.or(CardPredicates.Presets.ARTIFACTS, CardPredicates.Presets.CREATURES))) {
+                for (SpellAbility ab : c.getSpellAbilities()) {
+                    if (ab.isAbility() && !ab.isTrigger()) {
+                        Player controller = c.getController();
+                        boolean wasCaged = false;
+                        for (Card caged : CardLists.filter(controller.getCardsIn(ZoneType.Exile),
+                                CardPredicates.hasCounter(CounterType.CAGE))) {
+                            if (c.getName().equals(caged.getName())) {
+                                wasCaged = true;
+                                break;
+                            }
+                        }
+
+                        if (!wasCaged) {
+                            return c;
+                        }
+                    }
+                }
+            }
+            return null;
+        }
+    }
+
+    // Momir Vig, Simic Visionary Avatar
+    public static class MomirVigAvatar {
+        public static boolean consider(final Player ai, final SpellAbility sa) {
+            Card source = sa.getHostCard();
+
+            if (source.getGame().getPhaseHandler().getPhase().isBefore(PhaseType.MAIN1)) {
+                return false;
+            }
+            // Set PayX here to maximum value.
+            int tokenSize = ComputerUtilMana.determineLeftoverMana(sa, ai);
+
+            // Some basic strategy for Momir
+            if (tokenSize < 2) {
+                return false;
+            }
+
+            if (tokenSize > 11) {
+                tokenSize = 11;
+            }
+
+            source.setSVar("PayX", Integer.toString(tokenSize));
+
+            return true;
         }
     }
 
     // Necropotence
     public static class Necropotence {
-        public static boolean consider(Player ai, SpellAbility sa) {
+        public static boolean consider(final Player ai, final SpellAbility sa) {
             Game game = ai.getGame();
             int computerHandSize = ai.getZone(ZoneType.Hand).size();
             int maxHandSize = ai.getMaxHandSize();
@@ -407,9 +823,34 @@ public class SpecialCardAi {
         }
     }
 
+    // Null Brooch
+    public static class NullBrooch {
+        public static boolean consider(final Player ai, final SpellAbility sa) {
+            // TODO: improve the detection of Ensnaring Bridge type effects ("GTX", "X" need generalization)
+            boolean hasEnsnaringBridgeEffect = false;
+            for (Card otb : ai.getCardsIn(ZoneType.Battlefield)) {
+                for (StaticAbility stab : otb.getStaticAbilities()) {
+                    if ("CARDNAME can't attack.".equals(stab.getParam("AddHiddenKeyword"))
+                            && "Creature.powerGTX".equals(stab.getParam("Affected"))
+                            && "Count$InYourHand".equals(otb.getSVar("X"))) {
+                        hasEnsnaringBridgeEffect = true;
+                        break;
+                    }
+                }
+
+            }
+            // Maybe use it for some important high-impact spells even if there are more cards in hand?
+            if (ai.getCardsIn(ZoneType.Hand).size() > 1 && !hasEnsnaringBridgeEffect) {
+                return false;
+            }
+
+            return true;
+        }
+    }
+
     // Nykthos, Shrine to Nyx
     public static class NykthosShrineToNyx {
-        public static boolean consider(Player ai, SpellAbility sa) {
+        public static boolean consider(final Player ai, final SpellAbility sa) {
             Game game = ai.getGame();
             PhaseHandler ph = game.getPhaseHandler();
             if (!ph.isPlayerTurn(ai) || ph.getPhase().isBefore(PhaseType.MAIN2)) {
@@ -428,7 +869,7 @@ public class SpecialCardAi {
             final CardCollectionView cards = ai.getCardsIn(new ZoneType[] {ZoneType.Hand, ZoneType.Battlefield, ZoneType.Command});
             List<SpellAbility> all = ComputerUtilAbility.getSpellAbilities(cards, ai);
 
-            int numManaSrcs = CardLists.filter(ComputerUtilMana.getAvailableMana(ai, true), CardPredicates.Presets.UNTAPPED).size();
+            int numManaSrcs = CardLists.filter(ComputerUtilMana.getAvailableManaSources(ai, true), CardPredicates.Presets.UNTAPPED).size();
 
             for (final SpellAbility testSa : ComputerUtilAbility.getOriginalAndAltCostAbilities(all, ai)) {
                 ManaCost cost = testSa.getPayCosts().getTotalMana();
@@ -468,7 +909,7 @@ public class SpecialCardAi {
 
     // Phyrexian Dreadnought
     public static class PhyrexianDreadnought {
-        public static CardCollection reviseCreatureSacList(Player ai, SpellAbility sa, CardCollection choices) {
+        public static CardCollection reviseCreatureSacList(final Player ai, final SpellAbility sa, final CardCollection choices) {
             choices.sort(Collections.reverseOrder(ComputerUtilCard.EvaluateCreatureComparator));
             int power = 0;
             List<Card> toKeep = Lists.newArrayList();
@@ -492,11 +933,11 @@ public class SpecialCardAi {
 
     // Sarkhan the Mad
     public static class SarkhanTheMad {
-        public static boolean considerDig(Player ai, SpellAbility sa) {
+        public static boolean considerDig(final Player ai, final SpellAbility sa) {
             return sa.getHostCard().getCounters(CounterType.LOYALTY) == 1;
         }
 
-        public static boolean considerMakeDragon(Player ai, SpellAbility sa) {
+        public static boolean considerMakeDragon(final Player ai, final SpellAbility sa) {
             // TODO: expand this logic to make the AI force the opponent to sacrifice a big threat bigger than a 5/5 flier?
             CardCollection creatures = ai.getCreaturesInPlay();
             boolean hasValidTgt = !CardLists.filter(creatures, new Predicate<Card>() {
@@ -513,7 +954,7 @@ public class SpecialCardAi {
             return false;
         }
 
-        public static boolean considerUltimate(Player ai, SpellAbility sa, Player weakestOpp) {
+        public static boolean considerUltimate(final Player ai, final SpellAbility sa, final Player weakestOpp) {
             int minLife = weakestOpp.getLife();
 
             int dragonPower = 0;
@@ -526,9 +967,123 @@ public class SpecialCardAi {
         }
     }
 
+    // Survival of the Fittest
+    public static class SurvivalOfTheFittest {
+        public static Card considerDiscardTarget(final Player ai) {
+            // The AI here only checks the number of available creatures of various CMC, which is equivalent to knowing
+            // your deck composition and checking (and counting) the cards in other zones so you know what you have left
+            // in the library. As such, this does not cause unfair advantage, at least unless there are cards that are
+            // face down (on the battlefield or in exile). Might need some kind of an update to consider hidden information
+            // like that properly (probably by adding all those cards to the evaluation mix so the AI doesn't "know" which
+            // ones are already face down in play and which are still in the library)
+            CardCollectionView creatsInLib = CardLists.filter(ai.getCardsIn(ZoneType.Library), CardPredicates.Presets.CREATURES);
+            CardCollectionView creatsInHand = CardLists.filter(ai.getCardsIn(ZoneType.Hand), CardPredicates.Presets.CREATURES);
+            CardCollectionView manaSrcsInHand = CardLists.filter(ai.getCardsIn(ZoneType.Hand), CardPredicates.Presets.LANDS_PRODUCING_MANA);
+
+            if (creatsInHand.isEmpty() || creatsInLib.isEmpty()) { return null; }
+
+            int numManaSrcs = ComputerUtilMana.getAvailableManaEstimate(ai, false)
+                    + Math.min(1, manaSrcsInHand.size());
+
+            // Cards in library that are either below/at (preferred) or above the max CMC affordable by the AI
+            // (the latter might happen if we're playing a Reanimator deck with lots of fatties)
+            CardCollection atTargetCMCInLib = CardLists.filter(creatsInLib, new Predicate<Card>() {
+                @Override
+                public boolean apply(Card card) {
+                    return ComputerUtilMana.hasEnoughManaSourcesToCast(card.getSpellPermanent(), ai);
+                }
+            });
+            if (atTargetCMCInLib.isEmpty()) {
+                atTargetCMCInLib = CardLists.filter(creatsInLib, CardPredicates.greaterCMC(numManaSrcs));
+            }
+            Collections.sort(atTargetCMCInLib, CardLists.CmcComparatorInv);
+            if (atTargetCMCInLib.isEmpty()) {
+                // Nothing to aim for?
+                return null;
+            }
+
+            // Cards in hand that are below the max CMC affordable by the AI
+            CardCollection belowMaxCMC = CardLists.filter(creatsInHand, CardPredicates.lessCMC(numManaSrcs - 1));
+            Collections.sort(belowMaxCMC, Collections.reverseOrder(CardLists.CmcComparatorInv));
+
+            // Cards in hand that are above the max CMC affordable by the AI
+            CardCollection aboveMaxCMC = CardLists.filter(creatsInHand, CardPredicates.greaterCMC(numManaSrcs + 1));
+            Collections.sort(aboveMaxCMC, CardLists.CmcComparatorInv);
+
+            Card maxCMC = !aboveMaxCMC.isEmpty() ? aboveMaxCMC.getFirst() : null;
+            Card minCMC = !belowMaxCMC.isEmpty() ? belowMaxCMC.getFirst() : null;
+            Card bestInLib = !atTargetCMCInLib.isEmpty() ? atTargetCMCInLib.getFirst() : null;
+
+            int maxCMCdiff = 0;
+            if (maxCMC != null) {
+                maxCMCdiff = maxCMC.getCMC() - numManaSrcs; // how far are we from viably casting it?
+            }
+
+            // We have something too fat to viably cast in the nearest future, discard it hoping to
+            // grab something more immediately valuable (or maybe we're playing Reanimator and we want
+            // it to be in the graveyard anyway)
+            if (maxCMCdiff >= 3) {
+                return maxCMC;
+            }
+            // We have a card in hand that is worse than the one in library, so discard the worst card
+            if (maxCMCdiff <= 0 && minCMC != null
+                    && ComputerUtilCard.evaluateCreature(bestInLib) > ComputerUtilCard.evaluateCreature(minCMC)) {
+                return minCMC;
+            }
+            // We have a card in the library that is closer to being castable than the one in hand, and
+            // no options with smaller CMC, so discard the one that is harder to cast for the one that is
+            // easier to cast right now, but only if the best card in the library is at least CMC 3
+            // (probably not worth it to grab low mana cost cards this way)
+            if (maxCMC != null && maxCMC.getCMC() < bestInLib.getCMC() && bestInLib.getCMC() >= 3) {
+                return maxCMC;
+            }
+            // We appear to be playing Reanimator (or we have a reanimator card in hand already), so it's
+            // worth to fill the graveyard now
+            if (ComputerUtil.isPlayingReanimator(ai) && !creatsInLib.isEmpty()) {
+                CardCollection creatsInHandByCMC = new CardCollection(creatsInHand);
+                Collections.sort(creatsInHandByCMC, CardLists.CmcComparatorInv);
+                return creatsInHandByCMC.getFirst();
+            }
+
+            // probably nothing that is worth changing, so bail
+            return null;
+        }
+
+        public static Card considerCardToGet(final Player ai, final SpellAbility sa) {
+            CardCollectionView creatsInLib = CardLists.filter(ai.getCardsIn(ZoneType.Library), CardPredicates.Presets.CREATURES);
+            if (creatsInLib.isEmpty()) { return null; }
+
+            CardCollectionView manaSrcsInHand = CardLists.filter(ai.getCardsIn(ZoneType.Hand), CardPredicates.Presets.LANDS_PRODUCING_MANA);
+            int numManaSrcs = ComputerUtilMana.getAvailableManaEstimate(ai, false)
+                    + Math.min(1, manaSrcsInHand.size());
+
+            CardCollection atTargetCMCInLib = CardLists.filter(creatsInLib, new Predicate<Card>() {
+                @Override
+                public boolean apply(Card card) {
+                    return ComputerUtilMana.hasEnoughManaSourcesToCast(card.getSpellPermanent(), ai);
+                }
+            });
+            if (atTargetCMCInLib.isEmpty()) {
+                atTargetCMCInLib = CardLists.filter(creatsInLib, CardPredicates.greaterCMC(numManaSrcs));
+            }
+            Collections.sort(atTargetCMCInLib, CardLists.CmcComparatorInv);
+
+            Card bestInLib = atTargetCMCInLib != null ? atTargetCMCInLib.getFirst() : null;
+
+            if (bestInLib == null && ComputerUtil.isPlayingReanimator(ai)) {
+                // For Reanimator, we don't mind grabbing the biggest thing possible to recycle it again with SotF later.
+                CardCollection creatsInLibByCMC = new CardCollection(creatsInLib);
+                Collections.sort(creatsInLibByCMC, CardLists.CmcComparatorInv);
+                return creatsInLibByCMC.getFirst();
+            }
+
+            return bestInLib;
+        }
+    }
+
     // Timetwister
     public static class Timetwister {
-        public static boolean consider(Player ai, SpellAbility sa) {
+        public static boolean consider(final Player ai, final SpellAbility sa) {
             final int aiHandSize = ai.getCardsIn(ZoneType.Hand).size();
             int maxOppHandSize = 0;
 
@@ -550,8 +1105,44 @@ public class SpecialCardAi {
         }
     }
 
+    // Volrath's Shapeshifter
+    public static class VolrathsShapeshifter {
+        public static boolean consider(final Player ai, final SpellAbility sa) {
+            CardCollectionView aiGY = ai.getCardsIn(ZoneType.Graveyard);
+            Card topGY = null;
+            Card creatHand = ComputerUtilCard.getBestCreatureAI(ai.getCardsIn(ZoneType.Hand));
+            int numCreatsInHand = CardLists.filter(ai.getCardsIn(ZoneType.Hand), CardPredicates.Presets.CREATURES).size();
+
+            if (!aiGY.isEmpty()) {
+                topGY = ai.getCardsIn(ZoneType.Graveyard).get(0);
+            }
+
+            if ((topGY != null && !topGY.isCreature()) || creatHand != null) {
+                if (numCreatsInHand > 1 || !ComputerUtilMana.canPayManaCost(creatHand.getSpellPermanent(), ai, 0)) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        public static CardCollection targetBestCreature(final Player ai, final SpellAbility sa) {
+            Card creatHand = ComputerUtilCard.getBestCreatureAI(ai.getCardsIn(ZoneType.Hand));
+            if (creatHand != null) {
+                CardCollection cc = new CardCollection();
+                cc.add(creatHand);
+                return cc;
+            }
+
+            // Should ideally never get here
+            System.err.println("Volrath's Shapeshifter AI: Could not find a discard target despite the previous confirmation to proceed!");
+            return null;
+        }
+    }
+
+    // Ugin, the Spirit Dragon
     public static class UginTheSpiritDragon {
-        public static boolean considerPWAbilityPriority(Player ai, SpellAbility sa, ZoneType origin, CardCollectionView oppType, CardCollectionView computerType) {
+        public static boolean considerPWAbilityPriority(final Player ai, final SpellAbility sa, final ZoneType origin, CardCollectionView oppType, CardCollectionView computerType) {
             Card source = sa.getHostCard();
             Game game = source.getGame();
             
@@ -610,7 +1201,7 @@ public class SpecialCardAi {
 
     // Yawgmoth's Bargain
     public static class YawgmothsBargain {
-        public static boolean consider(Player ai, SpellAbility sa) {
+        public static boolean consider(final Player ai, final SpellAbility sa) {
             Game game = ai.getGame();
             PhaseHandler ph = game.getPhaseHandler();
 
@@ -653,7 +1244,7 @@ public class SpecialCardAi {
     
     // Yawgmoth's Will (can potentially be expanded for other broadly similar effects too)
     public static class YawgmothsWill {
-        public static boolean consider(Player ai, SpellAbility sa) {
+        public static boolean consider(final Player ai, final SpellAbility sa) {
             CardCollectionView cardsInGY = ai.getCardsIn(ZoneType.Graveyard);
             if (cardsInGY.size() == 0) {
                 return false;

forge-ai/src/main/java/forge/ai/SpellAbilityAi.java

@@ -1,12 +1,7 @@
 package forge.ai;
 
-import java.util.Collection;
-import java.util.List;
-import java.util.Map;
-
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
-
 import forge.card.ICardFace;
 import forge.card.mana.ManaCost;
 import forge.card.mana.ManaCostParser;
@@ -25,6 +20,10 @@ import forge.game.spellability.SpellAbility;
 import forge.game.spellability.SpellAbilityCondition;
 import forge.util.MyRandom;
 
+import java.util.Collection;
+import java.util.List;
+import java.util.Map;
+
 /**
  * Base class for API-specific AI logic
  * <p>
@@ -103,6 +102,12 @@ public abstract class SpellAbilityAi {
      * Checks if the AI will play a SpellAbility with the specified AiLogic
      */
     protected boolean checkAiLogic(final Player ai, final SpellAbility sa, final String aiLogic) {
+        if (aiLogic.equals("CheckCondition")) {
+            SpellAbility saCopy = sa.copy();
+            saCopy.setActivatingPlayer(ai);
+            return saCopy.getConditions().areMet(saCopy);
+        }
+
         return !("Never".equals(aiLogic));
     }
 
@@ -118,7 +123,7 @@ public abstract class SpellAbilityAi {
         if (!ComputerUtilCost.checkDiscardCost(ai, cost, source)) {
             return false;
         }
-        if (!ComputerUtilCost.checkSacrificeCost(ai, cost, source)) {
+        if (!ComputerUtilCost.checkSacrificeCost(ai, cost, source, sa)) {
             return false;
         }
         if (!ComputerUtilCost.checkRemoveCounterCost(cost, source, sa)) {

forge-ai/src/main/java/forge/ai/SpellApiToAi.java

@@ -1,14 +1,13 @@
 package forge.ai;
 
-import java.util.Map;
-
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Maps;
-
 import forge.ai.ability.*;
 import forge.game.ability.ApiType;
 import forge.util.ReflectionUtil;
 
+import java.util.Map;
+
 public enum SpellApiToAi {
     Converter;
 
@@ -31,6 +30,7 @@ public enum SpellApiToAi {
             .put(ApiType.BidLife, BidLifeAi.class)
             .put(ApiType.Bond, BondAi.class)
             .put(ApiType.Branch, AlwaysPlayAi.class)
+            .put(ApiType.ChangeCombatants, CannotPlayAi.class)
             .put(ApiType.ChangeTargets, ChangeTargetsAi.class)
             .put(ApiType.ChangeZone, ChangeZoneAi.class)
             .put(ApiType.ChangeZoneAll, ChangeZoneAllAi.class)
@@ -71,12 +71,14 @@ public enum SpellApiToAi {
             .put(ApiType.ExchangeControlVariant, CannotPlayAi.class)
             .put(ApiType.ExchangePower, PowerExchangeAi.class)
             .put(ApiType.ExchangeZone, ZoneExchangeAi.class)
+            .put(ApiType.Explore, ExploreAi.class)
             .put(ApiType.Fight, FightAi.class)
             .put(ApiType.FlipACoin, FlipACoinAi.class)
             .put(ApiType.Fog, FogAi.class)
             .put(ApiType.GainControl, ControlGainAi.class)
             .put(ApiType.GainLife, LifeGainAi.class)
             .put(ApiType.GainOwnership, CannotPlayAi.class)
+            .put(ApiType.GameDrawn, CannotPlayAi.class)
             .put(ApiType.GenericChoice, ChooseGenericEffectAi.class)
             .put(ApiType.Goad, GoadAi.class)
             .put(ApiType.Haunt, HauntAi.class)

forge-ai/src/main/java/forge/ai/ability/ActivateAbilityAi.java

@@ -1,5 +1,6 @@
 package forge.ai.ability;
 
+import forge.ai.ComputerUtil;
 import forge.ai.SpellAbilityAi;
 import forge.game.ability.AbilityUtils;
 import forge.game.card.Card;
@@ -21,7 +22,7 @@ public class ActivateAbilityAi extends SpellAbilityAi {
 
         final TargetRestrictions tgt = sa.getTargetRestrictions();
         final Card source = sa.getHostCard();
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
         final Random r = MyRandom.getRandom();
         boolean randomReturn = r.nextFloat() <= Math.pow(.6667, sa.getActivationsThisTurn());
 
@@ -46,7 +47,7 @@ public class ActivateAbilityAi extends SpellAbilityAi {
 
     @Override
     protected boolean doTriggerAINoCost(Player ai, SpellAbility sa, boolean mandatory) {
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
 
         final TargetRestrictions tgt = sa.getTargetRestrictions();
         final Card source = sa.getHostCard();
@@ -87,7 +88,7 @@ public class ActivateAbilityAi extends SpellAbilityAi {
             }
         } else {
             sa.resetTargets();
-            sa.getTargets().add(ai.getOpponent());
+            sa.getTargets().add(ComputerUtil.getOpponentFor(ai));
         }
 
         return randomReturn;

forge-ai/src/main/java/forge/ai/ability/AlwaysPlayAi.java

@@ -3,6 +3,7 @@ package forge.ai.ability;
 
 import forge.ai.SpellAbilityAi;
 import forge.game.player.Player;
+import forge.game.player.PlayerActionConfirmMode;
 import forge.game.spellability.SpellAbility;
 
 public class AlwaysPlayAi extends SpellAbilityAi {
@@ -13,4 +14,9 @@ public class AlwaysPlayAi extends SpellAbilityAi {
     protected boolean canPlayAI(Player aiPlayer, SpellAbility sa) {
         return true;
     }
+
+    @Override
+    public boolean confirmAction(Player player, SpellAbility sa, PlayerActionConfirmMode mode, String message) {
+        return true;
+    }
 }

forge-ai/src/main/java/forge/ai/ability/AnimateAi.java

@@ -1,28 +1,15 @@
 package forge.ai.ability;
 
-import java.util.Arrays;
-import java.util.List;
-import java.util.Map;
-
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
-import forge.ai.AiCardMemory;
+import forge.ai.*;
-
-import forge.ai.ComputerUtilCard;
-import forge.ai.ComputerUtilCost;
-import forge.ai.SpellAbilityAi;
 import forge.card.CardType;
 import forge.game.Game;
 import forge.game.ability.AbilityFactory;
 import forge.game.ability.AbilityUtils;
 import forge.game.ability.ApiType;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
-import forge.game.card.CardCollectionView;
-import forge.game.card.CardLists;
-import forge.game.card.CardPredicates;
-import forge.game.card.CardUtil;
 import forge.game.phase.PhaseHandler;
 import forge.game.phase.PhaseType;
 import forge.game.player.Player;
@@ -38,6 +25,10 @@ import forge.game.trigger.TriggerHandler;
 import forge.game.zone.ZoneType;
 import forge.util.collect.FCollectionView;
 
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+
 
 /**
  * <p>
@@ -86,13 +77,13 @@ public class AnimateAi extends SpellAbilityAi {
                 num = (num == null) ? "1" : num;
                 final int nToSac = AbilityUtils.calculateAmount(topStack.getHostCard(), num, topStack);
                 CardCollection list = CardLists.getValidCards(ai.getCardsIn(ZoneType.Battlefield), valid.split(","),
-                        ai.getOpponent(), topStack.getHostCard(), topStack);
+                		ComputerUtil.getOpponentFor(ai), topStack.getHostCard(), topStack);
                 list = CardLists.filter(list, CardPredicates.canBeSacrificedBy(topStack));
                 ComputerUtilCard.sortByEvaluateCreature(list);
                 if (!list.isEmpty() && list.size() == nToSac && ComputerUtilCost.canPayCost(sa, ai)) {
                     Card animatedCopy = becomeAnimated(source, sa);
                     list.add(animatedCopy);
-                    list = CardLists.getValidCards(list, valid.split(","), ai.getOpponent(), topStack.getHostCard(),
+                    list = CardLists.getValidCards(list, valid.split(","), ComputerUtil.getOpponentFor(ai), topStack.getHostCard(),
                             topStack);
                     list = CardLists.filter(list, CardPredicates.canBeSacrificedBy(topStack));
                     if (ComputerUtilCard.evaluateCreature(animatedCopy) < ComputerUtilCard.evaluateCreature(list.get(0))
@@ -172,7 +163,9 @@ public class AnimateAi extends SpellAbilityAi {
                         }
                     }
                     if (power + toughness > c.getCurrentPower() + c.getCurrentToughness()) {
-                        bFlag = true;
+                        if (!c.isTapped() || (game.getCombat() != null && game.getCombat().isAttacking(c))) {
+                            bFlag = true;
+                        }
                     }
                 }
 
@@ -186,9 +179,21 @@ public class AnimateAi extends SpellAbilityAi {
                             && !ComputerUtilCard.doesSpecifiedCreatureBlock(aiPlayer, animatedCopy)) {
                         return false;
                     }
-                    this.rememberAnimatedThisTurn(aiPlayer, c);
+                    // also check if maybe there are static effects applied to the animated copy that would matter
+                    // (e.g. Myth Realized)
+                    if (animatedCopy.getCurrentPower() + animatedCopy.getCurrentToughness() >
+                            c.getCurrentPower() + c.getCurrentToughness()) {
+                        if (!isAnimatedThisTurn(aiPlayer, sa.getHostCard())) {
+                            if (!sa.getHostCard().isTapped() || (game.getCombat() != null && game.getCombat().isAttacking(sa.getHostCard()))) {
+                                bFlag = true;
+                            }
+                        }
+                    }
                 }
             }
+            if (bFlag) {
+                this.rememberAnimatedThisTurn(aiPlayer, sa.getHostCard());
+            }
             return bFlag; // All of the defined stuff is animated, not very useful
         } else {
             sa.resetTargets();

forge-ai/src/main/java/forge/ai/ability/AttachAi.java

@@ -38,7 +38,7 @@ public class AttachAi extends SpellAbilityAi {
 
         if (abCost != null) {
             // AI currently disabled for these costs
-            if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source)) {
+            if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source, sa)) {
                 return false;
             }
             if (!ComputerUtilCost.checkLifeCost(ai, abCost, source, 4, sa)) {
@@ -250,6 +250,18 @@ public class AttachAi extends SpellAbilityAi {
                     return false;
                 }
 
+                if (!mandatory) {
+                    if (!c.isCreature() && !c.getType().hasSubtype("Vehicle") && !c.isTapped()) {
+                        // try to identify if this thing can actually tap
+                        for (SpellAbility ab : c.getAllSpellAbilities()) {
+                            if (ab.getPayCosts() != null && ab.getPayCosts().hasTapCost()) {
+                                return true;
+                            }
+                        }
+                        return false;
+                    }
+                }
+
                 if (!c.isEnchanted()) {
                     return true;
                 }
@@ -580,8 +592,8 @@ public class AttachAi extends SpellAbilityAi {
                 continue;
             }
             if ((affected.contains(stCheck) || affected.contains("AttachedBy"))) {
-                totToughness += AttachAi.parseSVar(attachSource, stabMap.get("AddToughness"));
+                totToughness += AbilityUtils.calculateAmount(attachSource, stabMap.get("AddToughness"), sa);
-                totPower += AttachAi.parseSVar(attachSource, stabMap.get("AddPower"));
+                totPower += AbilityUtils.calculateAmount(attachSource, stabMap.get("AddPower"), sa);
 
                 String kws = stabMap.get("AddKeyword");
                 if (kws != null) {
@@ -702,30 +714,6 @@ public class AttachAi extends SpellAbilityAi {
         return true;
     }
 
-    /**
-     * parseSVar TODO - flesh out javadoc for this method.
-     * 
-     * @param hostCard
-     *            the Card with the SVar on it
-     * @param amount
-     *            a String
-     * @return the calculated number
-     */
-    public static int parseSVar(final Card hostCard, final String amount) {
-        int num = 0;
-        if (amount == null) {
-            return num;
-        }
-    
-        try {
-            num = Integer.valueOf(amount);
-        } catch (final NumberFormatException e) {
-            num = CardFactoryUtil.xCount(hostCard, hostCard.getSVar(amount).split("\\$")[1]);
-        }
-    
-        return num;
-    }
-
     /**
      * Attach preference.
      *
@@ -874,8 +862,8 @@ public class AttachAi extends SpellAbilityAi {
                 continue;
             }
             if ((affected.contains(stCheck) || affected.contains("AttachedBy"))) {
-                totToughness += AttachAi.parseSVar(attachSource, stabMap.get("AddToughness"));
+                totToughness += AbilityUtils.calculateAmount(attachSource, stabMap.get("AddToughness"), sa);
-                totPower += AttachAi.parseSVar(attachSource, stabMap.get("AddPower"));
+                totPower += AbilityUtils.calculateAmount(attachSource, stabMap.get("AddPower"), sa);
 
                 grantingAbilities |= stabMap.containsKey("AddAbility");
 
@@ -1077,10 +1065,10 @@ public class AttachAi extends SpellAbilityAi {
             // make sure to prioritize casting spells in main 2 (creatures, other equipment, etc.) rather than moving equipment around
             boolean decideMoveFromUseless = uselessCreature && aic.getBooleanProperty(AiProps.PRIORITIZE_MOVE_EQUIPMENT_IF_USELESS);
 
-            if (!decideMoveFromUseless && AiCardMemory.isMemorySetEmpty(aiPlayer, AiCardMemory.MemorySet.HELD_MANA_SOURCES)) {
+            if (!decideMoveFromUseless && AiCardMemory.isMemorySetEmpty(aiPlayer, AiCardMemory.MemorySet.HELD_MANA_SOURCES_FOR_MAIN2)) {
                 SpellAbility futureSpell = aic.predictSpellToCastInMain2(ApiType.Attach);
                 if (futureSpell != null && futureSpell.getHostCard() != null) {
-                    aic.reserveManaSourcesForMain2(futureSpell);
+                    aic.reserveManaSources(futureSpell);
                 }
             }
 
@@ -1287,9 +1275,9 @@ public class AttachAi extends SpellAbilityAi {
             if (card.hasKeyword("Flying") || !CombatUtil.canBlock(card, true)) {
                 return false;
             }
-        } else if (keyword.endsWith("CARDNAME can block an additional creature.")) {
+        } else if (keyword.endsWith("CARDNAME can block an additional creature each combat.")) {
             if (!CombatUtil.canBlock(card, true) || card.hasKeyword("CARDNAME can block any number of creatures.")
-                    || card.hasKeyword("CARDNAME can block an additional ninety-nine creatures.")) {
+                    || card.hasKeyword("CARDNAME can block an additional ninety-nine creatures each combat.")) {
                 return false;
             }
         } else if (keyword.equals("CARDNAME can attack as though it didn't have defender.")) {

forge-ai/src/main/java/forge/ai/ability/BalanceAi.java

@@ -1,5 +1,6 @@
 package forge.ai.ability;
 
+import forge.ai.ComputerUtil;
 import forge.ai.SpellAbilityAi;
 import forge.game.card.CardCollectionView;
 import forge.game.card.CardLists;
@@ -16,7 +17,7 @@ public class BalanceAi extends SpellAbilityAi {
 
         int diff = 0;
         // TODO Add support for multiplayer logic
-        final Player opp = aiPlayer.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(aiPlayer);
         final CardCollectionView humPerms = opp.getCardsIn(ZoneType.Battlefield);
         final CardCollectionView compPerms = aiPlayer.getCardsIn(ZoneType.Battlefield);
         

forge-ai/src/main/java/forge/ai/ability/BidLifeAi.java

@@ -2,6 +2,7 @@ package forge.ai.ability;
 
 import java.util.List;
 
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilCard;
 import forge.ai.SpellAbilityAi;
 import forge.game.Game;
@@ -24,7 +25,7 @@ public class BidLifeAi extends SpellAbilityAi {
         if (tgt != null) {
             sa.resetTargets();
             if (tgt.canTgtCreature()) {
-                List<Card> list = CardLists.getTargetableCards(aiPlayer.getOpponent().getCardsIn(ZoneType.Battlefield), sa);
+                List<Card> list = CardLists.getTargetableCards(ComputerUtil.getOpponentFor(aiPlayer).getCardsIn(ZoneType.Battlefield), sa);
                 list = CardLists.getValidCards(list, tgt.getValidTgts(), source.getController(), source, sa);
                 if (list.isEmpty()) {
                     return false;

forge-ai/src/main/java/forge/ai/ability/BondAi.java

@@ -36,10 +36,10 @@ public final class BondAi extends SpellAbilityAi {
      * <p>
      * bondCanPlayAI.
      * </p>
+     * @param aiPlayer
+     *            a {@link forge.game.player.Player} object.
      * @param sa
      *            a {@link forge.game.spellability.SpellAbility} object.
-     * @param af
-     *            a {@link forge.game.ability.AbilityFactory} object.
      *
      * @return a boolean.
      */
@@ -53,4 +53,9 @@ public final class BondAi extends SpellAbilityAi {
     protected Card chooseSingleCard(Player ai, SpellAbility sa, Iterable<Card> options, boolean isOptional, Player targetedPlayer) {
         return ComputerUtilCard.getBestCreatureAI(options);
     }
+
+    @Override
+    protected boolean doTriggerAINoCost(final Player aiPlayer, final SpellAbility sa, final boolean mandatory) {
+        return true;
+    }
 }

forge-ai/src/main/java/forge/ai/ability/ChangeZoneAi.java

@@ -1,20 +1,10 @@
 package forge.ai.ability;
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.List;
-import java.util.Map;
-
-import org.apache.commons.lang3.StringUtils;
-
 import com.google.common.base.Predicate;
 import com.google.common.base.Predicates;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
-
 import forge.ai.*;
 import forge.card.MagicColor;
 import forge.game.Game;
@@ -22,11 +12,7 @@ import forge.game.GameObject;
 import forge.game.GlobalRuleChange;
 import forge.game.ability.AbilityUtils;
 import forge.game.ability.ApiType;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
-import forge.game.card.CardCollectionView;
-import forge.game.card.CardLists;
-import forge.game.card.CardPredicates;
 import forge.game.card.CardPredicates.Presets;
 import forge.game.combat.Combat;
 import forge.game.cost.Cost;
@@ -40,6 +26,9 @@ import forge.game.spellability.AbilitySub;
 import forge.game.spellability.SpellAbility;
 import forge.game.spellability.TargetRestrictions;
 import forge.game.zone.ZoneType;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.*;
 
 public class ChangeZoneAi extends SpellAbilityAi {
     /*
@@ -49,6 +38,10 @@ public class ChangeZoneAi extends SpellAbilityAi {
      * too much: blink/bounce/exile/tutor/Raise Dead/Surgical Extraction/......
      */
 
+    // multipleCardsToChoose is used by Intuition and can be adapted to be used by other
+    // cards where multiple cards are fetched at once and they need to be coordinated
+    private static CardCollection multipleCardsToChoose = new CardCollection();
+
     @Override
     protected boolean checkAiLogic(final Player ai, final SpellAbility sa, final String aiLogic) {
         if (sa.getHostCard() != null && sa.getHostCard().hasSVar("AIPreferenceOverride")) {
@@ -64,23 +57,45 @@ public class ChangeZoneAi extends SpellAbilityAi {
             if (ai.getGame().getPhaseHandler().getPhase().isBefore(PhaseType.COMBAT_DECLARE_ATTACKERS)) {
                 return false;
             }
+        } else if (aiLogic.equals("PriorityOptionalCost")) {
+            boolean highPriority = false;
+            // if we have more than one of these in hand, might not be worth waiting for optional cost payment on the additional copy
+            highPriority |= CardLists.filter(ai.getCardsIn(ZoneType.Hand), CardPredicates.nameEquals(sa.getHostCard().getName())).size() > 1;
+            // if we are in danger in combat, no need to wait to pay the optional cost
+            highPriority |= ai.getGame().getPhaseHandler().is(PhaseType.COMBAT_DECLARE_BLOCKERS)
+                    && ai.getGame().getCombat() != null && ComputerUtilCombat.lifeInDanger(ai, ai.getGame().getCombat());
+
+            if (!highPriority) {
+                if (Iterables.isEmpty(sa.getOptionalCosts())) {
+                    return false;
+                }
+            }
         }
+
         return super.checkAiLogic(ai, sa, aiLogic);
     }
 
     @Override
     protected boolean checkApiLogic(Player aiPlayer, SpellAbility sa) {
         // Checks for "return true" unlike checkAiLogic()
+
+        multipleCardsToChoose.clear();
         String aiLogic = sa.getParam("AILogic");
         if (aiLogic != null) {
             if (aiLogic.equals("Always")) {
                 return true;
             } else if (aiLogic.startsWith("SacAndUpgrade")) { // Birthing Pod, Natural Order, etc.
                 return this.doSacAndUpgradeLogic(aiPlayer, sa);
+            } else if (aiLogic.startsWith("SacAndRetFromGrave")) { // Recurring Nightmare, etc.
+                return this.doSacAndReturnFromGraveLogic(aiPlayer, sa);
             } else if (aiLogic.equals("Necropotence")) {
                 return SpecialCardAi.Necropotence.consider(aiPlayer, sa);
-            } else if (aiLogic.equals("SameName")) {   // Declaration in Stone
+            } else if (aiLogic.equals("SameName")) { // Declaration in Stone
                 return this.doSameNameLogic(aiPlayer, sa);
+            } else if (aiLogic.equals("Intuition")) {
+                // This logic only fills the multiple cards array, the decision to play is made
+                // separately in hiddenOriginCanPlayAI later.
+                multipleCardsToChoose = SpecialCardAi.Intuition.considerMultiple(aiPlayer, sa);
             }
         }
         if (isHidden(sa)) {
@@ -166,7 +181,7 @@ public class ChangeZoneAi extends SpellAbilityAi {
         final Card source = sa.getHostCard();
         final String sourceName = ComputerUtilAbility.getAbilitySourceName(sa);
         ZoneType origin = null;
-        final Player opponent = ai.getOpponent();
+        final Player opponent = ComputerUtil.getOpponentFor(ai);
         boolean activateForCost = ComputerUtil.activateForCost(sa, ai);
 
         if (sa.hasParam("Origin")) {
@@ -182,7 +197,7 @@ public class ChangeZoneAi extends SpellAbilityAi {
 
         if (abCost != null) {
             // AI currently disabled for these costs
-            if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source)
+            if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source, sa)
                     && !(destination.equals("Battlefield") && !source.isLand())) {
                 return false;
             }
@@ -367,7 +382,7 @@ public class ChangeZoneAi extends SpellAbilityAi {
         // if putting cards from hand to library and parent is drawing cards
         // make sure this will actually do something:
         final TargetRestrictions tgt = sa.getTargetRestrictions();
-        final Player opp = aiPlayer.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(aiPlayer);
         if (tgt != null && tgt.canTgtPlayer()) {
             boolean isCurse = sa.isCurse();
             if (isCurse && sa.canTarget(opp)) {
@@ -428,7 +443,7 @@ public class ChangeZoneAi extends SpellAbilityAi {
         Iterable<Player> pDefined;
         final TargetRestrictions tgt = sa.getTargetRestrictions();
         if ((tgt != null) && tgt.canTgtPlayer()) {
-            final Player opp = ai.getOpponent();
+            final Player opp = ComputerUtil.getOpponentFor(ai);
             if (sa.isCurse()) {
                 if (sa.canTarget(opp)) {
                     sa.getTargets().add(opp);
@@ -547,8 +562,9 @@ public class ChangeZoneAi extends SpellAbilityAi {
      */
     private static Card chooseCreature(final Player ai, CardCollection list) {
         // Creating a new combat for testing purposes. 
-        Combat combat = new Combat(ai.getOpponent());
+    	final Player opponent = ComputerUtil.getOpponentFor(ai);
-        for (Card att : ai.getOpponent().getCreaturesInPlay()) {
+        Combat combat = new Combat(opponent);
+        for (Card att : opponent.getCreaturesInPlay()) {
             combat.addAttacker(att, ai);
         }
         AiBlockController block = new AiBlockController(ai);
@@ -647,6 +663,20 @@ public class ChangeZoneAi extends SpellAbilityAi {
                     return false;
                 }
             }
+
+            if (destination == ZoneType.Battlefield) {
+                // predict whether something may put a ETBing creature below zero toughness
+                // (e.g. Reassembing Skeleton + Elesh Norn, Grand Cenobite)
+                for (final Card c : retrieval) {
+                    if (c.isCreature()) {
+                        final Card copy = CardUtil.getLKICopy(c);
+                        ComputerUtilCard.applyStaticContPT(c.getGame(), copy, null);
+                        if (copy.getNetToughness() <= 0) {
+                            return false;
+                        }
+                    }
+                }
+            }
         }
 
         final AbilitySub subAb = sa.getSubAbility();
@@ -666,6 +696,12 @@ public class ChangeZoneAi extends SpellAbilityAi {
      */
     @Override
     protected boolean checkPhaseRestrictions(Player ai, SpellAbility sa, PhaseHandler ph) {
+        String aiLogic = sa.getParamOrDefault("AILogic", "");
+
+        if (aiLogic.equals("SurvivalOfTheFittest")) {
+            return ph.getNextTurn().equals(ai) && ph.is(PhaseType.END_OF_TURN);
+        }
+
         if (isHidden(sa)) {
             return true;
         }
@@ -828,7 +864,7 @@ public class ChangeZoneAi extends SpellAbilityAi {
                                 && !currCombat.getBlockers(attacker).isEmpty()) {
                             ComputerUtilCard.sortByEvaluateCreature(blockers);
                             Combat combat = new Combat(ai);
-                            combat.addAttacker(attacker, ai.getOpponent());
+                            combat.addAttacker(attacker, ComputerUtil.getOpponentFor(ai));
                             for (Card blocker : blockers) {
                                 combat.addBlocker(attacker, blocker);
                             }
@@ -974,18 +1010,21 @@ public class ChangeZoneAi extends SpellAbilityAi {
                 return false;
             }
 
-            list = CardLists.filterControlledBy(list, ai.getOpponents());
+
-            list = CardLists.filter(list, new Predicate<Card>() {
+            if (!sa.hasParam("AITgtOwnCards")) {
-                @Override
+                list = CardLists.filterControlledBy(list, ai.getOpponents());
-                public boolean apply(final Card c) {
+                list = CardLists.filter(list, new Predicate<Card>() {
-                    for (Card aura : c.getEnchantedBy(false)) {
+                    @Override
-                        if (c.getOwner().isOpponentOf(ai) && aura.getController().equals(ai)) {
+                    public boolean apply(final Card c) {
-                            return false;
+                        for (Card aura : c.getEnchantedBy(false)) {
+                            if (c.getOwner().isOpponentOf(ai) && aura.getController().equals(ai)) {
+                                return false;
+                            }
                         }
+                        return true;
                     }
-                    return true;
+                });
-                }
+            }
-            });
         }
 
         // Only care about combatants during combat
@@ -1000,6 +1039,10 @@ public class ChangeZoneAi extends SpellAbilityAi {
             return false;
         }
 
+        // Check if the opponent can save a creature from bounce/blink/whatever by paying
+        // the Unless cost (for example, Erratic Portal)
+        list.removeAll(getSafeTargetsIfUnlessCostPaid(ai, sa, list));
+
         if (!mandatory && list.size() < tgt.getMinTargets(sa.getHostCard(), sa)) {
             return false;
         }
@@ -1077,7 +1120,16 @@ public class ChangeZoneAi extends SpellAbilityAi {
                     return false;
                 } else {
                     if (!sa.isTrigger() && !ComputerUtil.shouldCastLessThanMax(ai, source)) {
-                        return false;
+                        boolean aiTgtsOK = false;
+                        if (sa.hasParam("AIMinTgts")) {
+                            int minTgts = Integer.parseInt(sa.getParam("AIMinTgts"));
+                            if (sa.getTargets().getNumTargeted() >= minTgts) {
+                                aiTgtsOK = true;
+                            }
+                        }
+                        if (!aiTgtsOK) {
+                            return false;
+                        }
                     }
                     break;
                 }
@@ -1284,6 +1336,10 @@ public class ChangeZoneAi extends SpellAbilityAi {
      * @return a boolean.
      */
     private static boolean knownOriginTriggerAI(final Player ai, final SpellAbility sa, final boolean mandatory) {
+        if ("DeathgorgeScavenger".equals(sa.getParam("AILogic"))) {
+            return SpecialCardAi.DeathgorgeScavenger.consider(ai, sa);
+        }
+
         if (sa.getTargetRestrictions() == null) {
             // Just in case of Defined cases
             if (!mandatory && sa.hasParam("AttachedTo")) {
@@ -1319,6 +1375,16 @@ public class ChangeZoneAi extends SpellAbilityAi {
                 }
             } else if ("WorstCard".equals(logic)) {
                 return ComputerUtilCard.getWorstAI(fetchList);
+            } else if ("Mairsil".equals(logic)) {
+                return SpecialCardAi.MairsilThePretender.considerCardFromList(fetchList);
+            } else if ("SurvivalOfTheFittest".equals(logic)) {
+                return SpecialCardAi.SurvivalOfTheFittest.considerCardToGet(decider, sa);
+            } else if ("Intuition".equals(logic)) {
+                if (!multipleCardsToChoose.isEmpty()) {
+                    Card choice = multipleCardsToChoose.get(0);
+                    multipleCardsToChoose.remove(0);
+                    return choice;
+                }
             }
         }
         if (fetchList.isEmpty()) {
@@ -1459,7 +1525,33 @@ public class ChangeZoneAi extends SpellAbilityAi {
         return Iterables.getFirst(options, null);
     }
 
-    private boolean doSacAndUpgradeLogic(final Player ai, SpellAbility sa) {
+    private boolean doSacAndReturnFromGraveLogic(final Player ai, final SpellAbility sa) {
+        Card source = sa.getHostCard();
+        String definedSac = StringUtils.split(source.getSVar("AIPreference"), "$")[1];
+
+        CardCollection listToSac = CardLists.filter(ai.getCardsIn(ZoneType.Battlefield), CardPredicates.restriction(definedSac.split(","), ai, source, sa));
+        listToSac.sort(Collections.reverseOrder(CardLists.CmcComparatorInv));
+
+        CardCollection listToRet = CardLists.filter(ai.getCardsIn(ZoneType.Graveyard), Presets.CREATURES);
+        listToRet.sort(CardLists.CmcComparatorInv);
+
+        if (!listToSac.isEmpty() && !listToRet.isEmpty()) {
+            Card worstSac = listToSac.getFirst();
+            Card bestRet = listToRet.getFirst();
+
+            if (bestRet.getCMC() > worstSac.getCMC()
+                    && ComputerUtilCard.evaluateCreature(bestRet) > ComputerUtilCard.evaluateCreature(worstSac)) {
+                sa.resetTargets();
+                sa.getTargets().add(bestRet);
+                source.setSVar("AIPreferenceOverride", "Creature.cmcEQ" + worstSac.getCMC());
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    private boolean doSacAndUpgradeLogic(final Player ai, final SpellAbility sa) {
         Card source = sa.getHostCard();
         PhaseHandler ph = ai.getGame().getPhaseHandler();
         String logic = sa.getParam("AILogic");
@@ -1623,6 +1715,45 @@ public class ChangeZoneAi extends SpellAbilityAi {
         return true;
     }
 
+    private static CardCollection getSafeTargetsIfUnlessCostPaid(Player ai, SpellAbility sa, Iterable<Card> potentialTgts) {
+        // Determines if the controller of each potential target can negate the ChangeZone effect
+        // by paying the Unless cost. Returns the list of targets that can be saved that way.
+        final Card source = sa.getHostCard();
+        final CardCollection canBeSaved = new CardCollection();
+
+        for (Card potentialTgt : potentialTgts) {
+            String unlessCost = sa.hasParam("UnlessCost") ? sa.getParam("UnlessCost").trim() : null;
+
+            if (unlessCost != null && !unlessCost.endsWith(">")) {
+                Player opp = potentialTgt.getController();
+                int usableManaSources = ComputerUtilMana.getAvailableManaEstimate(opp);
+
+                int toPay = 0;
+                boolean setPayX = false;
+                if (unlessCost.equals("X") && source.getSVar(unlessCost).equals("Count$xPaid")) {
+                    setPayX = true;
+                    toPay = ComputerUtilMana.determineLeftoverMana(sa, ai);
+                } else {
+                    toPay = AbilityUtils.calculateAmount(source, unlessCost, sa);
+                }
+
+                if (toPay == 0) {
+                    canBeSaved.add(potentialTgt);
+                }
+
+                if (toPay <= usableManaSources) {
+                    canBeSaved.add(potentialTgt);
+                }
+
+                if (setPayX) {
+                    source.setSVar("PayX", Integer.toString(toPay));
+                }
+            }
+        }
+
+        return canBeSaved;
+    }
+
     private static void rememberBouncedThisTurn(Player ai, Card c) {
         AiCardMemory.rememberCard(ai, c, AiCardMemory.MemorySet.BOUNCED_THIS_TURN);
     }

forge-ai/src/main/java/forge/ai/ability/ChangeZoneAllAi.java

@@ -1,24 +1,11 @@
 package forge.ai.ability;
 
-import java.util.Collections;
-import java.util.Random;
-
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
-
+import forge.ai.*;
-import forge.ai.AiPlayerPredicates;
-import forge.ai.ComputerUtilAbility;
-import forge.ai.ComputerUtilCard;
-import forge.ai.ComputerUtilCost;
-import forge.ai.SpecialCardAi;
-import forge.ai.SpellAbilityAi;
 import forge.game.Game;
 import forge.game.ability.AbilityUtils;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
-import forge.game.card.CardCollectionView;
-import forge.game.card.CardLists;
-import forge.game.card.CardPredicates;
 import forge.game.cost.Cost;
 import forge.game.phase.PhaseType;
 import forge.game.player.Player;
@@ -28,6 +15,9 @@ import forge.game.spellability.SpellAbility;
 import forge.game.zone.ZoneType;
 import forge.util.MyRandom;
 
+import java.util.Collections;
+import java.util.Random;
+
 public class ChangeZoneAllAi extends SpellAbilityAi {
     @Override
     protected boolean canPlayAI(Player ai, SpellAbility sa) {
@@ -73,14 +63,25 @@ public class ChangeZoneAllAi extends SpellAbilityAi {
         oppType = AbilityUtils.filterListByType(oppType, sa.getParam("ChangeType"), sa);
         computerType = AbilityUtils.filterListByType(computerType, sa.getParam("ChangeType"), sa);
         
-        // Living Death AI
         if ("LivingDeath".equals(sa.getParam("AILogic"))) {
+            // Living Death AI
             return SpecialCardAi.LivingDeath.consider(ai, sa);
-        }
+        } else if ("Timetwister".equals(sa.getParam("AILogic"))) {
-
+            // Timetwister AI
-        // Timetwister AI
-        if ("Timetwister".equals(sa.getParam("AILogic"))) {
             return SpecialCardAi.Timetwister.consider(ai, sa);
+        } else if ("RetDiscardedThisTurn".equals(sa.getParam("AILogic"))) {
+            // e.g. Shadow of the Grave
+            return ai.getNumDiscardedThisTurn() > 0 && ai.getGame().getPhaseHandler().is(PhaseType.END_OF_TURN);
+        } else if ("ExileGraveyards".equals(sa.getParam("AILogic"))) {
+            for (Player opp : ai.getOpponents()) {
+                CardCollectionView cardsGY = opp.getCardsIn(ZoneType.Graveyard);
+                CardCollection creats = CardLists.filter(cardsGY, CardPredicates.Presets.CREATURES);
+
+                if (opp.hasDelirium() || opp.hasThreshold() || creats.size() >= 5) {
+                    return true;
+                }
+            }
+            return false;
         }
 
         // TODO improve restrictions on when the AI would want to use this
@@ -130,15 +131,39 @@ public class ChangeZoneAllAi extends SpellAbilityAi {
                 }
                 computerType = new CardCollection();
             }
+
+            int creatureEvalThreshold = 200; // value difference (in evaluateCreatureList units)
+            int nonCreatureEvalThreshold = 3; // CMC difference
+            if (ai.getController().isAI()) {
+                AiController aic = ((PlayerControllerAi)ai.getController()).getAi();
+                if (destination == ZoneType.Hand) {
+                    creatureEvalThreshold = aic.getIntProperty(AiProps.BOUNCE_ALL_TO_HAND_CREAT_EVAL_DIFF);
+                    nonCreatureEvalThreshold = aic.getIntProperty(AiProps.BOUNCE_ALL_TO_HAND_NONCREAT_EVAL_DIFF);
+                } else {
+                    creatureEvalThreshold = aic.getIntProperty(AiProps.BOUNCE_ALL_ELSEWHERE_CREAT_EVAL_DIFF);
+                    nonCreatureEvalThreshold = aic.getIntProperty(AiProps.BOUNCE_ALL_ELSEWHERE_NONCREAT_EVAL_DIFF);
+                }
+            }
+
+            // mass zone change for creatures: if in dire danger, do it; otherwise, only do it if the opponent's
+            // creatures are better in value
             if ((CardLists.getNotType(oppType, "Creature").size() == 0)
                     && (CardLists.getNotType(computerType, "Creature").size() == 0)) {
-                if ((ComputerUtilCard.evaluateCreatureList(computerType) + 200) >= ComputerUtilCard
+                if (game.getCombat() != null && ComputerUtilCombat.lifeInSeriousDanger(ai, game.getCombat())) {
+                    if (game.getPhaseHandler().is(PhaseType.COMBAT_DECLARE_BLOCKERS)
+                            && game.getPhaseHandler().getPlayerTurn().isOpponentOf(ai)) {
+                        // Life is in serious danger, return all creatures from the battlefield to wherever
+                        // so they don't deal lethal damage
+                        return true;
+                    }
+                }
+                if ((ComputerUtilCard.evaluateCreatureList(computerType) + creatureEvalThreshold) >= ComputerUtilCard
                         .evaluateCreatureList(oppType)) {
                     return false;
                 }
-            } // otherwise evaluate both lists by CMC and pass only if human
+            } // mass zone change for non-creatures: evaluate both lists by CMC and pass only if human
               // permanents are more valuable
-            else if ((ComputerUtilCard.evaluatePermanentList(computerType) + 3) >= ComputerUtilCard
+            else if ((ComputerUtilCard.evaluatePermanentList(computerType) + nonCreatureEvalThreshold) >= ComputerUtilCard
                     .evaluatePermanentList(oppType)) {
                 return false;
             }
@@ -180,6 +205,14 @@ public class ChangeZoneAllAi extends SpellAbilityAi {
                 // minimum card advantage unless the hand will be fully reloaded
                 int minAdv = logic.contains(".minAdv") ? Integer.parseInt(logic.substring(logic.indexOf(".minAdv") + 7)) : 0;
 
+                if (numExiledWithSrc > curHandSize) {
+                    if (ComputerUtil.predictThreatenedObjects(ai, sa, true).contains(source)) {
+                        // Try to gain some card advantage if the card will die anyway
+                        // TODO: ideally, should evaluate the hand value and not discard good hands to it
+                        return true;
+                    }
+                }
+
                 return (curHandSize + minAdv - 1 < numExiledWithSrc) || (numExiledWithSrc >= ai.getMaxHandSize());
             }
         } else if (origin.equals(ZoneType.Stack)) {
@@ -231,8 +264,8 @@ public class ChangeZoneAllAi extends SpellAbilityAi {
      * </p>
      * @param sa
      *            a {@link forge.game.spellability.SpellAbility} object.
-     * @param af
+     * @param aiPlayer
-     *            a {@link forge.game.ability.AbilityFactory} object.
+     *            a {@link forge.game.player.Player} object.
      * 
      * @return a boolean.
      */

forge-ai/src/main/java/forge/ai/ability/ChooseCardAi.java

@@ -6,6 +6,8 @@ import java.util.List;
 import com.google.common.base.Predicate;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
+
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilAbility;
 
 import forge.ai.ComputerUtilCard;
@@ -122,7 +124,7 @@ public class ChooseCardAi extends SpellAbilityAi {
             }
         } else if (aiLogic.equals("Duneblast")) {
             CardCollection aiCreatures = ai.getCreaturesInPlay();
-            CardCollection oppCreatures = ai.getOpponent().getCreaturesInPlay();
+            CardCollection oppCreatures = ComputerUtil.getOpponentFor(ai).getCreaturesInPlay();
             aiCreatures = CardLists.getNotKeyword(aiCreatures, "Indestructible");
             oppCreatures = CardLists.getNotKeyword(oppCreatures, "Indestructible");
 

forge-ai/src/main/java/forge/ai/ability/ChooseCardNameAi.java

@@ -6,10 +6,7 @@ import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
 
 import forge.StaticData;
-import forge.ai.ComputerUtil;
+import forge.ai.*;
-import forge.ai.ComputerUtilCard;
-import forge.ai.ComputerUtilMana;
-import forge.ai.SpellAbilityAi;
 import forge.card.CardDb;
 import forge.card.CardRules;
 import forge.card.CardSplitType;
@@ -36,29 +33,16 @@ public class ChooseCardNameAi extends SpellAbilityAi {
 
             String logic = sa.getParam("AILogic");
             if (logic.equals("MomirAvatar")) {
-                if (source.getGame().getPhaseHandler().getPhase().isBefore(PhaseType.MAIN1)) {
+                return SpecialCardAi.MomirVigAvatar.consider(ai, sa);
-                    return false;
+            } else if (logic.equals("CursedScroll")) {
-                }
+                return SpecialCardAi.CursedScroll.consider(ai, sa);
-                // Set PayX here to maximum value.
-                int tokenSize = ComputerUtilMana.determineLeftoverMana(sa, ai);
-                
-             // Some basic strategy for Momir
-                if (tokenSize < 2) {
-                    return false;
-                }
-
-                if (tokenSize > 11) {
-                    tokenSize = 11;
-                }
-
-                source.setSVar("PayX", Integer.toString(tokenSize));
             }
 
             final TargetRestrictions tgt = sa.getTargetRestrictions();
             if (tgt != null) {
                 sa.resetTargets();
                 if (tgt.canOnlyTgtOpponent()) {
-                    sa.getTargets().add(ai.getOpponent());
+                    sa.getTargets().add(ComputerUtil.getOpponentFor(ai));
                 } else {
                     sa.getTargets().add(ai);
                 }
@@ -78,6 +62,7 @@ public class ChooseCardNameAi extends SpellAbilityAi {
      */
     @Override
     public Card chooseSingleCard(final Player ai, SpellAbility sa, Iterable<Card> options, boolean isOptional, Player targetedPlayer) {
+
         return ComputerUtilCard.getBestAI(options);
     }
 

forge-ai/src/main/java/forge/ai/ability/ChooseColorAi.java

@@ -1,6 +1,5 @@
 package forge.ai.ability;
 
-import com.google.common.base.Predicates;
 import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilAbility;
 import forge.ai.ComputerUtilCard;
@@ -53,7 +52,7 @@ public class ChooseColorAi extends SpellAbilityAi {
         }
 
         if ("Addle".equals(sourceName)) {
-            if (ph.getPhase().isBefore(PhaseType.COMBAT_DECLARE_ATTACKERS) || ai.getOpponent().getCardsIn(ZoneType.Hand).isEmpty()) {
+            if (ph.getPhase().isBefore(PhaseType.COMBAT_DECLARE_ATTACKERS) || ComputerUtil.getOpponentFor(ai).getCardsIn(ZoneType.Hand).isEmpty()) {
                 return false;
             }
             return true;
@@ -62,7 +61,7 @@ public class ChooseColorAi extends SpellAbilityAi {
         if (logic.equals("MostExcessOpponentControls")) {
             for (byte color : MagicColor.WUBRG) {
                 CardCollectionView ailist = ai.getCardsIn(ZoneType.Battlefield);
-                CardCollectionView opplist = ai.getOpponent().getCardsIn(ZoneType.Battlefield);
+                CardCollectionView opplist = ComputerUtil.getOpponentFor(ai).getCardsIn(ZoneType.Battlefield);
 
                 ailist = CardLists.filter(ailist, CardPredicates.isColor(color));
                 opplist = CardLists.filter(opplist, CardPredicates.isColor(color));

forge-ai/src/main/java/forge/ai/ability/ChooseGenericEffectAi.java

@@ -196,7 +196,7 @@ public class ChooseGenericEffectAi extends SpellAbilityAi {
             }
             
             // milling against Tamiyo is pointless
-            if (owner.isCardInCommand("Tamiyo, the Moon Sage emblem")) {
+            if (owner.isCardInCommand("Emblem - Tamiyo, the Moon Sage")) {
                 return allow;
             }
             

forge-ai/src/main/java/forge/ai/ability/ChooseNumberAi.java

@@ -1,5 +1,6 @@
 package forge.ai.ability;
 
+import forge.ai.ComputerUtil;
 import forge.ai.SpellAbilityAi;
 import forge.game.player.Player;
 import forge.game.spellability.SpellAbility;
@@ -16,8 +17,9 @@ public class ChooseNumberAi extends SpellAbilityAi {
         TargetRestrictions tgt = sa.getTargetRestrictions();
         if (tgt != null) {
             sa.resetTargets();
-            if (sa.canTarget(aiPlayer.getOpponent())) {
+            Player opp = ComputerUtil.getOpponentFor(aiPlayer);
-                sa.getTargets().add(aiPlayer.getOpponent());
+            if (sa.canTarget(opp)) {
+                sa.getTargets().add(opp);
             } else {
                 return false;
             }

forge-ai/src/main/java/forge/ai/ability/ChooseSourceAi.java

@@ -5,6 +5,7 @@ import java.util.List;
 import com.google.common.base.Predicate;
 import com.google.common.collect.Lists;
 
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilCard;
 import forge.ai.ComputerUtilCombat;
 import forge.ai.ComputerUtilCost;
@@ -51,7 +52,7 @@ public class ChooseSourceAi extends SpellAbilityAi {
                 return false;
             }
 
-            if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source)) {
+            if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source, sa)) {
                 return false;
             }
 
@@ -63,8 +64,9 @@ public class ChooseSourceAi extends SpellAbilityAi {
         final TargetRestrictions tgt = sa.getTargetRestrictions();
         if (tgt != null) {
             sa.resetTargets();
-            if (sa.canTarget(ai.getOpponent())) {
+            Player opp = ComputerUtil.getOpponentFor(ai);
-                sa.getTargets().add(ai.getOpponent());
+            if (sa.canTarget(opp)) {
+                sa.getTargets().add(opp);
             } else {
                 return false;
             }

forge-ai/src/main/java/forge/ai/ability/CloneAi.java

@@ -1,7 +1,5 @@
 package forge.ai.ability;
 
-import java.util.List;
-
 import forge.ai.ComputerUtilCard;
 import forge.ai.SpellAbilityAi;
 import forge.game.Game;
@@ -15,6 +13,9 @@ import forge.game.player.Player;
 import forge.game.player.PlayerActionConfirmMode;
 import forge.game.spellability.SpellAbility;
 import forge.game.spellability.TargetRestrictions;
+import forge.game.zone.ZoneType;
+
+import java.util.List;
 
 public class CloneAi extends SpellAbilityAi {
 
@@ -131,13 +132,19 @@ public class CloneAi extends SpellAbilityAi {
      * cloneTgtAI.
      * </p>
      * 
-     * @param af
-     *            a {@link forge.game.ability.AbilityFactory} object.
      * @param sa
      *            a {@link forge.game.spellability.SpellAbility} object.
      * @return a boolean.
      */
     private boolean cloneTgtAI(final SpellAbility sa) {
+        // Specific logic for cards
+        if ("CloneAttacker".equals(sa.getParam("AILogic"))) {
+            CardCollection valid = CardLists.getValidCards(sa.getHostCard().getController().getCardsIn(ZoneType.Battlefield), sa.getParam("ValidTgts"), sa.getHostCard().getController(), sa.getHostCard());
+            sa.getTargets().add(ComputerUtilCard.getBestCreatureAI(valid));
+            return true;
+        }
+
+        // Default:
         // This is reasonable for now. Kamahl, Fist of Krosa and a sorcery or
         // two are the only things
         // that clone a target. Those can just use SVar:RemAIDeck:True until

forge-ai/src/main/java/forge/ai/ability/ControlExchangeAi.java

@@ -3,6 +3,7 @@ package forge.ai.ability;
 import com.google.common.base.Predicate;
 import com.google.common.collect.Lists;
 
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilCard;
 import forge.ai.SpellAbilityAi;
 import forge.game.ability.AbilityUtils;
@@ -29,7 +30,7 @@ public class ControlExchangeAi extends SpellAbilityAi {
         sa.resetTargets();
 
         CardCollection list =
-                CardLists.getValidCards(ai.getOpponent().getCardsIn(ZoneType.Battlefield), tgt.getValidTgts(), ai, sa.getHostCard(), sa);
+                CardLists.getValidCards(ComputerUtil.getOpponentFor(ai).getCardsIn(ZoneType.Battlefield), tgt.getValidTgts(), ai, sa.getHostCard(), sa);
         // AI won't try to grab cards that are filtered out of AI decks on
         // purpose
         list = CardLists.filter(list, new Predicate<Card>() {

forge-ai/src/main/java/forge/ai/ability/ControlGainAi.java

@@ -227,16 +227,18 @@ public class ControlGainAi extends SpellAbilityAi {
                     t = ComputerUtilCard.getMostExpensivePermanentAI(list, sa, true);
                 }
 
-                if (t.isCreature())
+                if (t != null) {
-                    creatures--;
+                    if (t.isCreature())
-                if (t.isPlaneswalker())
+                        creatures--;
-                    planeswalkers--;
+                    if (t.isPlaneswalker())
-                if (t.isLand())
+                        planeswalkers--;
-                    lands--;
+                    if (t.isLand())
-                if (t.isArtifact())
+                        lands--;
-                    artifacts--;
+                    if (t.isArtifact())
-                if (t.isEnchantment())
+                        artifacts--;
-                    enchantments--;
+                    if (t.isEnchantment())
+                        enchantments--;
+                }
 
                 if (!sa.canTarget(t)) {
                     list.remove(t);

forge-ai/src/main/java/forge/ai/ability/CopySpellAbilityAi.java

@@ -3,6 +3,7 @@ package forge.ai.ability;
 import forge.ai.SpecialCardAi;
 import forge.ai.SpellAbilityAi;
 import forge.game.player.Player;
+import forge.game.player.PlayerActionConfirmMode;
 import forge.game.spellability.SpellAbility;
 
 import java.util.List;
@@ -25,9 +26,10 @@ public class CopySpellAbilityAi extends SpellAbilityAi {
     public boolean chkAIDrawback(final SpellAbility sa, final Player aiPlayer) {
         // NOTE: Other SAs that use CopySpellAbilityAi (e.g. Chain Lightning) are currently routed through
         // generic method SpellAbilityAi#chkDrawbackWithSubs and are handled there.
-
         if ("ChainOfSmog".equals(sa.getParam("AILogic"))) {
             return SpecialCardAi.ChainOfSmog.consider(aiPlayer, sa);
+        } else if ("ChainOfAcid".equals(sa.getParam("AILogic"))) {
+            return SpecialCardAi.ChainOfAcid.consider(aiPlayer, sa);
         }
 
         return super.chkAIDrawback(sa, aiPlayer);
@@ -37,5 +39,17 @@ public class CopySpellAbilityAi extends SpellAbilityAi {
     public SpellAbility chooseSingleSpellAbility(Player player, SpellAbility sa, List<SpellAbility> spells) {
         return spells.get(0);
     }
+
+    @Override
+    public boolean confirmAction(Player player, SpellAbility sa, PlayerActionConfirmMode mode, String message) {
+        // Chain of Acid requires special attention here since otherwise the AI will confirm the copy and then
+        // run into the necessity of confirming a mandatory Destroy, thus destroying all of its own permanents.
+        if ("ChainOfAcid".equals(sa.getParam("AILogic"))) {
+            return SpecialCardAi.ChainOfAcid.consider(player, sa);
+        }
+
+        return true;
+    }
+
 }
 

forge-ai/src/main/java/forge/ai/ability/CounterAi.java

@@ -1,15 +1,6 @@
 package forge.ai.ability;
 
-import forge.ai.AiController;
+import forge.ai.*;
-import forge.ai.AiProps;
-import forge.ai.ComputerUtilAbility;
-import java.util.Iterator;
-
-import forge.ai.ComputerUtilCost;
-import forge.ai.ComputerUtilMana;
-import forge.ai.PlayerControllerAi;
-import forge.ai.SpecialCardAi;
-import forge.ai.SpellAbilityAi;
 import forge.game.Game;
 import forge.game.ability.AbilityUtils;
 import forge.game.ability.ApiType;
@@ -25,6 +16,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.lang3.tuple.ImmutablePair;
 import org.apache.commons.lang3.tuple.Pair;
 
+import java.util.Iterator;
+
 public class CounterAi extends SpellAbilityAi {
 
     @Override
@@ -43,7 +36,7 @@ public class CounterAi extends SpellAbilityAi {
 
         if (abCost != null) {
             // AI currently disabled for these costs
-            if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source)) {
+            if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source, sa)) {
                 return false;
             }
             if (!ComputerUtilCost.checkLifeCost(ai, abCost, source, 4, sa)) {
@@ -93,8 +86,9 @@ public class CounterAi extends SpellAbilityAi {
         String unlessCost = sa.hasParam("UnlessCost") ? sa.getParam("UnlessCost").trim() : null;
 
         if (unlessCost != null && !unlessCost.endsWith(">")) {
-            // Is this Usable Mana Sources? Or Total Available Mana?
+            Player opp = tgtSA.getActivatingPlayer();
-            final int usableManaSources = ComputerUtilMana.getAvailableMana(ai.getOpponent(), true).size();
+            int usableManaSources = ComputerUtilMana.getAvailableManaEstimate(opp);
+
             int toPay = 0;
             boolean setPayX = false;
             if (unlessCost.equals("X") && source.getSVar(unlessCost).equals("Count$xPaid")) {
@@ -137,6 +131,10 @@ public class CounterAi extends SpellAbilityAi {
                 if (tgtCMC < minCMC) {
                     return false;
                 }
+            } else if ("NullBrooch".equals(logic)) {
+                if (!SpecialCardAi.NullBrooch.consider(ai, sa)) {
+                    return false;
+                }
             }
         }
 
@@ -146,14 +144,31 @@ public class CounterAi extends SpellAbilityAi {
         boolean ctrCmc0ManaPerms = aic.getBooleanProperty(AiProps.ALWAYS_COUNTER_CMC_0_MANA_MAKING_PERMS);
         boolean ctrDamageSpells = aic.getBooleanProperty(AiProps.ALWAYS_COUNTER_DAMAGE_SPELLS);
         boolean ctrRemovalSpells = aic.getBooleanProperty(AiProps.ALWAYS_COUNTER_REMOVAL_SPELLS);
+        boolean ctrPumpSpells = aic.getBooleanProperty(AiProps.ALWAYS_COUNTER_PUMP_SPELLS);
+        boolean ctrAuraSpells = aic.getBooleanProperty(AiProps.ALWAYS_COUNTER_AURAS);
         boolean ctrOtherCounters = aic.getBooleanProperty(AiProps.ALWAYS_COUNTER_OTHER_COUNTERSPELLS);
+        int ctrChanceCMC1 = aic.getIntProperty(AiProps.CHANCE_TO_COUNTER_CMC_1);
+        int ctrChanceCMC2 = aic.getIntProperty(AiProps.CHANCE_TO_COUNTER_CMC_2);
+        int ctrChanceCMC3 = aic.getIntProperty(AiProps.CHANCE_TO_COUNTER_CMC_3);
         String ctrNamed = aic.getProperty(AiProps.ALWAYS_COUNTER_SPELLS_FROM_NAMED_CARDS);
+        boolean dontCounter = false;
+
+        if (tgtCMC == 1 && !MyRandom.percentTrue(ctrChanceCMC1)) {
+            dontCounter = true;
+        } else if (tgtCMC == 2 && !MyRandom.percentTrue(ctrChanceCMC2)) {
+            dontCounter = true;
+        } else if (tgtCMC == 3 && !MyRandom.percentTrue(ctrChanceCMC3)) {
+            dontCounter = true;
+        }
+
         if (tgtSA != null && tgtCMC < aic.getIntProperty(AiProps.MIN_SPELL_CMC_TO_COUNTER)) {
-            boolean dontCounter = true;
+            dontCounter = true;
             Card tgtSource = tgtSA.getHostCard();
             if ((tgtSource != null && tgtCMC == 0 && tgtSource.isPermanent() && !tgtSource.getManaAbilities().isEmpty() && ctrCmc0ManaPerms)
                     || (tgtSA.getApi() == ApiType.DealDamage || tgtSA.getApi() == ApiType.LoseLife || tgtSA.getApi() == ApiType.DamageAll && ctrDamageSpells)
                     || (tgtSA.getApi() == ApiType.Counter && ctrOtherCounters)
+                    || ((tgtSA.getApi() == ApiType.Pump || tgtSA.getApi() == ApiType.PumpAll) && ctrPumpSpells)
+                    || (tgtSA.getApi() == ApiType.Attach && ctrAuraSpells)
                     || (tgtSA.getApi() == ApiType.Destroy || tgtSA.getApi() == ApiType.DestroyAll || tgtSA.getApi() == ApiType.Sacrifice
                        || tgtSA.getApi() == ApiType.SacrificeAll && ctrRemovalSpells)) {
                 dontCounter = false;
@@ -167,14 +182,18 @@ public class CounterAi extends SpellAbilityAi {
                 }
             }
 
-            // should always counter CMC 1 with Mental Misstep despite a possible limitation by minimum CMC
+            // should not refrain from countering a CMC X spell if that's the only CMC
-            if (tgtCMC == 1 && "Mental Misstep".equals(source.getName())) {
+            // counterable with that particular counterspell type (e.g. Mental Misstep vs. CMC 1 spells)
-                dontCounter = false;
+            if (sa.getParamOrDefault("ValidTgts", "").startsWith("Card.cmcEQ")) {
+                int validTgtCMC = AbilityUtils.calculateAmount(source, sa.getParam("ValidTgts").substring(10), sa);
+                if (tgtCMC == validTgtCMC) {
+                    dontCounter = false;
+                }
             }
+        }
 
-            if (dontCounter) {
+        if (dontCounter) {
-                return false;
+            return false;
-            }
         }
 
         return toReturn;
@@ -212,8 +231,9 @@ public class CounterAi extends SpellAbilityAi {
 
             final Card source = sa.getHostCard();
             if (unlessCost != null) {
-                // Is this Usable Mana Sources? Or Total Available Mana?
+                Player opp = tgtSA.getActivatingPlayer();
-                final int usableManaSources = ComputerUtilMana.getAvailableMana(ai.getOpponent(), true).size();
+                int usableManaSources = ComputerUtilMana.getAvailableManaEstimate(opp);
+
                 int toPay = 0;
                 boolean setPayX = false;
                 if (unlessCost.equals("X") && source.getSVar(unlessCost).equals("Count$xPaid")) {

forge-ai/src/main/java/forge/ai/ability/CountersPutAi.java

@@ -20,6 +20,7 @@ import forge.game.combat.CombatUtil;
 import forge.game.cost.Cost;
 import forge.game.cost.CostPart;
 import forge.game.cost.CostRemoveCounter;
+import forge.game.cost.CostSacrifice;
 import forge.game.phase.PhaseHandler;
 import forge.game.phase.PhaseType;
 import forge.game.player.Player;
@@ -225,13 +226,42 @@ public class CountersPutAi extends SpellAbilityAi {
         }
 
         if ("PayEnergyConservatively".equals(sa.getParam("AILogic"))) {
+            boolean onlyInCombat = ai.getController().isAI()
+                    && ((PlayerControllerAi) ai.getController()).getAi().getBooleanProperty(AiProps.CONSERVATIVE_ENERGY_PAYMENT_ONLY_IN_COMBAT);
+            boolean onlyDefensive = ai.getController().isAI()
+                    && ((PlayerControllerAi) ai.getController()).getAi().getBooleanProperty(AiProps.CONSERVATIVE_ENERGY_PAYMENT_ONLY_DEFENSIVELY);
+
             if (playAggro) {
                 // aggro profiles ignore conservative play for this AI logic
                 return true;
-            } else if (ai.getCounters(CounterType.ENERGY) > ComputerUtilCard.getMaxSAEnergyCostOnBattlefield(ai) + sa.getPayCosts().getCostEnergy().convertAmount()) {
-                return true;
             } else if (ai.getGame().getCombat() != null && sa.getHostCard() != null) {
-                if (ai.getGame().getCombat().isAttacking(sa.getHostCard())) {  
+                if (ai.getGame().getCombat().isAttacking(sa.getHostCard()) && !onlyDefensive) {
+                    return true;
+                } else if (ai.getGame().getCombat().isBlocking(sa.getHostCard())) {
+                    // when blocking, consider this if it's possible to save the blocker and/or kill at least one attacker
+                    CardCollection blocked = ai.getGame().getCombat().getAttackersBlockedBy(sa.getHostCard());
+                    int totBlkPower = Aggregates.sum(blocked, CardPredicates.Accessors.fnGetNetPower);
+                    int totBlkToughness = Aggregates.min(blocked, CardPredicates.Accessors.fnGetNetToughness);
+
+                    int numActivations = ai.getCounters(CounterType.ENERGY) / sa.getPayCosts().getCostEnergy().convertAmount();
+                    if (sa.getHostCard().getNetToughness() + numActivations > totBlkPower
+                            || sa.getHostCard().getNetPower() + numActivations >= totBlkToughness) {
+                        return true;
+                    }
+                }
+            } else if (sa.getSubAbility() != null
+                        && "Self".equals(sa.getSubAbility().getParam("Defined"))
+                        && sa.getSubAbility().getParamOrDefault("KW", "").contains("Hexproof")
+                        && !AiCardMemory.isRememberedCard(ai, source, AiCardMemory.MemorySet.ANIMATED_THIS_TURN)) {
+                    // Bristling Hydra: save from death using a ping activation
+                    if (ComputerUtil.predictThreatenedObjects(sa.getActivatingPlayer(), sa).contains(source)) {
+                        AiCardMemory.rememberCard(ai, source, AiCardMemory.MemorySet.ACTIVATED_THIS_TURN);
+                        return true;
+                    }
+            } else if (ai.getCounters(CounterType.ENERGY) > ComputerUtilCard.getMaxSAEnergyCostOnBattlefield(ai) + sa.getPayCosts().getCostEnergy().convertAmount()) {
+                // outside of combat, this logic only works if the relevant AI profile option is enabled
+                // and if there is enough energy saved
+                if (!onlyInCombat) {
                     return true;
                 }
             }
@@ -326,7 +356,7 @@ public class CountersPutAi extends SpellAbilityAi {
         PhaseHandler ph = ai.getGame().getPhaseHandler();
 
         if ("AlwaysAtOppEOT".equals(sa.getParam("AILogic"))) {
-            if (ph.is(PhaseType.END_OF_TURN) && !ph.isPlayerTurn(ai)) {
+            if (ph.is(PhaseType.END_OF_TURN) && ph.getNextTurn().equals(ai)) {
                 return true;
             }
         }
@@ -373,6 +403,13 @@ public class CountersPutAi extends SpellAbilityAi {
                 }
             });
 
+            if (abCost.hasSpecificCostType(CostSacrifice.class)) {
+                Card sacTarget = ComputerUtil.getCardPreference(ai, source, "SacCost", list);
+                // this card is planned to be sacrificed during cost payment, so don't target it
+                // (otherwise the AI can cheat by activating this SA and not paying the sac cost, e.g. Extruder)
+                list.remove(sacTarget);
+            }
+
             if (list.size() < sa.getTargetRestrictions().getMinTargets(source, sa)) {
                 return false;
             }
@@ -491,7 +528,7 @@ public class CountersPutAi extends SpellAbilityAi {
 
         boolean immediately = ComputerUtil.playImmediately(ai, sa);
         
-        if (abCost != null && !ComputerUtilCost.checkSacrificeCost(ai, abCost, source, immediately)) {
+        if (abCost != null && !ComputerUtilCost.checkSacrificeCost(ai, abCost, source, sa, immediately)) {
             return false;
         }
         
@@ -670,6 +707,13 @@ public class CountersPutAi extends SpellAbilityAi {
                         list = CardLists.getTargetableCards(ai.getOpponents().getCardsIn(ZoneType.Battlefield), sa);
                         preferred = false;
                     }
+
+                    if (list.isEmpty()) {
+                        // Still an empty list, but we have to choose something (mandatory); expand targeting to
+                        // include AI's own cards to see if there's anything targetable (e.g. Plague Belcher).
+                        list = CardLists.getTargetableCards(ai.getCardsIn(ZoneType.Battlefield), sa);
+                        preferred = false;
+                    }
                 }
 
                 if (list.isEmpty()) {

forge-ai/src/main/java/forge/ai/ability/CountersPutAllAi.java

@@ -1,6 +1,8 @@
 package forge.ai.ability;
 
 import com.google.common.base.Predicate;
+
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilCost;
 import forge.ai.ComputerUtilMana;
 import forge.ai.SpellAbilityAi;
@@ -35,10 +37,11 @@ public class CountersPutAllAi extends SpellAbilityAi {
         final String type = sa.getParam("CounterType");
         final String amountStr = sa.getParam("CounterNum");
         final String valid = sa.getParam("ValidCards");
+        final String logic = sa.getParamOrDefault("AILogic", "");
         final boolean curse = sa.isCurse();
         final TargetRestrictions tgt = sa.getTargetRestrictions();
 
-        hList = CardLists.getValidCards(ai.getOpponent().getCardsIn(ZoneType.Battlefield), valid, source.getController(), source);
+        hList = CardLists.getValidCards(ComputerUtil.getOpponentFor(ai).getCardsIn(ZoneType.Battlefield), valid, source.getController(), source);
         cList = CardLists.getValidCards(ai.getCardsIn(ZoneType.Battlefield), valid, source.getController(), source);
 
         if (abCost != null) {
@@ -51,13 +54,19 @@ public class CountersPutAllAi extends SpellAbilityAi {
                 return false;
             }
 
-            if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source)) {
+            if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source, sa)) {
+                return false;
+            }
+        }
+
+        if (logic.equals("AtEOTOrBlock")) {
+            if (!ai.getGame().getPhaseHandler().is(PhaseType.END_OF_TURN) && !ai.getGame().getPhaseHandler().is(PhaseType.COMBAT_DECLARE_BLOCKERS)) {
                 return false;
             }
         }
 
         if (tgt != null) {
-            Player pl = curse ? ai.getOpponent() : ai;
+            Player pl = curse ? ComputerUtil.getOpponentFor(ai) : ai;
             sa.getTargets().add(pl);
 
             hList = CardLists.filterControlledBy(hList, pl);
@@ -138,6 +147,6 @@ public class CountersPutAllAi extends SpellAbilityAi {
      */
     @Override
     public boolean confirmAction(Player player, SpellAbility sa, PlayerActionConfirmMode mode, String message) {
-        return player.getCreaturesInPlay().size() >= player.getOpponent().getCreaturesInPlay().size();
+        return player.getCreaturesInPlay().size() >= ComputerUtil.getOpponentFor(player).getCreaturesInPlay().size();
     }
 }

forge-ai/src/main/java/forge/ai/ability/DamageAiBase.java

@@ -1,7 +1,7 @@
 package forge.ai.ability;
 
 import com.google.common.collect.Iterables;
-
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilCombat;
 import forge.ai.SpellAbilityAi;
 import forge.game.Game;
@@ -18,7 +18,14 @@ public abstract class DamageAiBase extends SpellAbilityAi {
     protected boolean shouldTgtP(final Player comp, final SpellAbility sa, final int d, final boolean noPrevention) {
         int restDamage = d;
         final Game game = comp.getGame();
-        final Player enemy = comp.getOpponent();
+        Player enemy = ComputerUtil.getOpponentFor(comp);
+        boolean dmgByCardsInHand = false;
+
+        if ("X".equals(sa.getParam("NumDmg")) && sa.getHostCard() != null && sa.hasSVar(sa.getParam("NumDmg")) &&
+                sa.getHostCard().getSVar(sa.getParam("NumDmg")).equals("TargetedPlayer$CardsInHand")) {
+            dmgByCardsInHand = true;
+        }
+
         if (!sa.canTarget(enemy)) {
             return false;
         }
@@ -70,8 +77,11 @@ public abstract class DamageAiBase extends SpellAbilityAi {
                         value = 1.0f * restDamage / enemy.getLife();
                     }
                 } else {
-                    if (phase.isPlayerTurn(enemy) && phase.is(PhaseType.END_OF_TURN)) {
+                    if (phase.isPlayerTurn(enemy)) {
-                        value = 1.5f * restDamage / enemy.getLife();
+                        if (phase.is(PhaseType.END_OF_TURN)
+                                || ((dmgByCardsInHand && phase.getPhase().isAfter(PhaseType.UPKEEP)))) {
+                            value = 1.5f * restDamage / enemy.getLife();
+                        }
                     }
                 }
                 if (value > 0) {    //more likely to burn with larger hand

forge-ai/src/main/java/forge/ai/ability/DamageAllAi.java

@@ -1,7 +1,6 @@
 package forge.ai.ability;
 
 import com.google.common.base.Predicate;
-
 import forge.ai.*;
 import forge.game.ability.AbilityUtils;
 import forge.game.card.Card;
@@ -56,16 +55,35 @@ public class  DamageAllAi extends SpellAbilityAi {
             x = source.getCounters(CounterType.LOYALTY);
         }
         if (x == -1) {
+            Player bestOpp = determineOppToKill(ai, sa, source, dmg);
+            if (determineOppToKill(ai, sa, source, dmg) != null) {
+                // we already know we can kill a player, so go for it
+                return true;
+            }
+            // look for other value in this (damaging creatures or
+            // creatures + player, e.g. Pestilence, etc.)
             return evaluateDamageAll(ai, sa, source, dmg) > 0;
         } else {
             int best = -1, best_x = -1;
-            for (int i = 0; i < x; i++) {
+            Player bestOpp = determineOppToKill(ai, sa, source, x);
-                final int value = evaluateDamageAll(ai, sa, source, i);
+            if (bestOpp != null) {
-                if (value > best) {
+                // we can finish off a player, so go for it
-                    best = value;
+
-                    best_x = i;
+                // TODO: improve this by possibly damaging more creatures
+                // on the battlefield belonging to other opponents at the same
+                // time, if viable
+                best_x = bestOpp.getLife();
+            } else {
+                // see if it's possible to get value from killing off creatures
+                for (int i = 0; i <= x; i++) {
+                    final int value = evaluateDamageAll(ai, sa, source, i);
+                    if (value > best) {
+                        best = value;
+                        best_x = i;
+                    }
                 }
             }
+
             if (best_x > 0) {
                 if (sa.getSVar(damage).equals("Count$xPaid")) {
                     source.setSVar("PayX", Integer.toString(best_x));
@@ -79,8 +97,31 @@ public class  DamageAllAi extends SpellAbilityAi {
         }
     }
 
+    private Player determineOppToKill(Player ai, SpellAbility sa, Card source, int x) {
+        // Attempt to determine which opponent can be finished off such that the most players
+        // are killed at the same time, given X damage tops
+        final String validP = sa.hasParam("ValidPlayers") ? sa.getParam("ValidPlayers") : "";
+        int aiLife = ai.getLife();
+        Player bestOpp = null; // default opponent, if all else fails
+
+        for (int dmg = 1; dmg <= x; dmg++) {
+            // Don't kill yourself in the process
+            if (validP.equals("Player") && aiLife <= ComputerUtilCombat.predictDamageTo(ai, dmg, source, false)) {
+                break;
+            }
+            for (Player opp : ai.getOpponents()) {
+                if ((validP.equals("Player") || validP.contains("Opponent"))
+                        && (opp.getLife() <= ComputerUtilCombat.predictDamageTo(opp, dmg, source, false))) {
+                    bestOpp = opp;
+                }
+            }
+        }
+
+        return bestOpp;
+    }
+
     private int evaluateDamageAll(Player ai, SpellAbility sa, final Card source, int dmg) {
-        Player opp = ai.getOpponent();
+        final Player opp = ai.getWeakestOpponent();
         final CardCollection humanList = getKillableCreatures(sa, opp, dmg);
         CardCollection computerList = getKillableCreatures(sa, ai, dmg);
 
@@ -98,62 +139,56 @@ public class  DamageAllAi extends SpellAbilityAi {
             return -1;
         }
 
-        // if we can kill human, do it
+        int minGain = 200; // The minimum gain in destroyed creatures
-        if ((validP.equals("Player") || validP.contains("Opponent"))
+        if (sa.getPayCosts() != null && sa.getPayCosts().isReusuableResource()) {
-                && (opp.getLife() <= ComputerUtilCombat.predictDamageTo(opp, dmg, source, false))) {
+            if (computerList.isEmpty()) {
-            return 1;
+                minGain = 10; // nothing to lose
-        }
+                // no creatures to lose and player can be damaged
-
+                // so do it if it's helping!
-		int minGain = 200; // The minimum gain in destroyed creatures
+                // ----------------------------
-		if (sa.getPayCosts() != null && sa.getPayCosts().isReusuableResource()) {
+                // needs future improvement on pestilence :
-			if (computerList.isEmpty()) {
+                // what if we lose creatures but can win by repeated activations?
-				minGain = 10; // nothing to lose
+                // that tactic only works if there are creatures left to keep pestilence in play
-				// no creatures to lose and player can be damaged
+                // and can kill the player in a reasonable amount of time (no more than 2-3 turns?)
-				// so do it if it's helping!
+                if (validP.equals("Player")) {
-				// ----------------------------
+                    if (ComputerUtilCombat.predictDamageTo(opp, dmg, source, false) > 0) {
-				// needs future improvement on pestilence : 
+                        // When using Pestilence to hurt players, do it at
-				// what if we lose creatures but can win by repeated activations?
+                        // the end of the opponent's turn only
-				// that tactic only works if there are creatures left to keep pestilence in play
+                        if ((!"DmgAllCreaturesAndPlayers".equals(sa.getParam("AILogic")))
-				// and can kill the player in a reasonable amount of time (no more than 2-3 turns?)
+                                || ((ai.getGame().getPhaseHandler().is(PhaseType.END_OF_TURN)
-				if (validP.equals("Player")) {
+                                && (ai.getGame().getNonactivePlayers().contains(ai)))))
-					if (ComputerUtilCombat.predictDamageTo(opp, dmg, source, false) > 0) {
+                        // Need further improvement : if able to kill immediately with repeated activations, do not wait
-						// When using Pestilence to hurt players, do it at
+                        // for phases! Will also need to implement considering repeated activations for killed creatures!
-						// the end of the opponent's turn only
+                        // || (ai.sa.getPayCosts(). ??? )
-						if ((!"DmgAllCreaturesAndPlayers".equals(sa.getParam("AILogic")))
+                        {
-								|| ((ai.getGame().getPhaseHandler().is(PhaseType.END_OF_TURN)
+                            // would take zero damage, and hurt opponent, do it!
-										&& (ai.getGame().getNonactivePlayers().contains(ai)))))
+                            if (ComputerUtilCombat.predictDamageTo(ai, dmg, source, false)<1) {
-						// Need further improvement : if able to kill immediately with repeated activations, do not wait
+                                return 1;
-						// for phases! Will also need to implement considering repeated activations for killed creatures!
+                            }
-						// || (ai.sa.getPayCosts(). ??? )
+                            // enemy is expected to die faster than AI from damage if repeated
-						{
+                            if (ai.getLife() > ComputerUtilCombat.predictDamageTo(ai, dmg, source, false)
-							// would take zero damage, and hurt opponent, do it!
+                                    * ((opp.getLife() + ComputerUtilCombat.predictDamageTo(opp, dmg, source, false) - 1)
-							if (ComputerUtilCombat.predictDamageTo(ai, dmg, source, false)<1) {
+                                    / ComputerUtilCombat.predictDamageTo(opp, dmg, source, false))) {
-								return 1;
+                                // enemy below 10 life, go for it!
-							}
+                                if ((opp.getLife() < 10)
-							// enemy is expected to die faster than AI from damage if repeated
+                                        && (ComputerUtilCombat.predictDamageTo(opp, dmg, source, false) >= 1)) {
-							if (ai.getLife() > ComputerUtilCombat.predictDamageTo(ai, dmg, source, false)
+                                    return 1;
-									* ((opp.getLife() + ComputerUtilCombat.predictDamageTo(opp, dmg, source, false) - 1)
+                                }
-											/ ComputerUtilCombat.predictDamageTo(opp, dmg, source, false))) {
+                                // At least half enemy remaining life can be removed in one go
-								// enemy below 10 life, go for it!
+                                // worth doing even if enemy still has high health - one more copy of spell to win!
-								if ((opp.getLife() < 10)
+                                if (opp.getLife() <= 2 * ComputerUtilCombat.predictDamageTo(opp, dmg, source, false)) {
-										&& (ComputerUtilCombat.predictDamageTo(opp, dmg, source, false) >= 1)) {
+                                    return 1;
-									return 1;
+                                }
-								}
+                            }
-								// At least half enemy remaining life can be removed in one go
+                        }
-								// worth doing even if enemy still has high health - one more copy of spell to win!
+                    }
-								if (opp.getLife() <= 2 * ComputerUtilCombat.predictDamageTo(opp, dmg, source, false)) {
+                }
-									return 1;
+            } else {
-								}
+                minGain = 100; // safety for errors in evaluate creature
-							}
+            }
-						}
-					}
-				}
-			} else {
-				minGain = 100; // safety for errors in evaluate creature
-        	}
         } else if (sa.getSubAbility() != null && ai.getGame().getPhaseHandler().isPreCombatMain() && computerList.isEmpty()
-        		&& opp.getCreaturesInPlay().size() > 1 && !ai.getCreaturesInPlay().isEmpty()) {
+                && opp.getCreaturesInPlay().size() > 1 && !ai.getCreaturesInPlay().isEmpty()) {
-        	minGain = 126; // prepare for attack
+            minGain = 126; // prepare for attack
         }
 
         return ComputerUtilCard.evaluateCreatureList(humanList) - ComputerUtilCard.evaluateCreatureList(computerList)
@@ -179,7 +214,7 @@ public class  DamageAllAi extends SpellAbilityAi {
         }
 
         // Evaluate creatures getting killed
-        Player enemy = ai.getOpponent();
+        Player enemy = ComputerUtil.getOpponentFor(ai);
         final CardCollection humanList = getKillableCreatures(sa, enemy, dmg);
         CardCollection computerList = getKillableCreatures(sa, ai, dmg);
         final TargetRestrictions tgt = sa.getTargetRestrictions();
@@ -261,7 +296,7 @@ public class  DamageAllAi extends SpellAbilityAi {
         }
 
         // Evaluate creatures getting killed
-        Player enemy = ai.getOpponent();
+        Player enemy = ComputerUtil.getOpponentFor(ai);
         final CardCollection humanList = getKillableCreatures(sa, enemy, dmg);
         CardCollection computerList = getKillableCreatures(sa, ai, dmg);
         final TargetRestrictions tgt = sa.getTargetRestrictions();

forge-ai/src/main/java/forge/ai/ability/DamageDealAi.java

@@ -1,21 +1,13 @@
 package forge.ai.ability;
 
-import java.util.List;
-import java.util.Map;
-
 import com.google.common.base.Predicate;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
-
 import forge.ai.*;
 import forge.game.Game;
 import forge.game.GameObject;
 import forge.game.ability.AbilityUtils;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
-import forge.game.card.CardLists;
-import forge.game.card.CardPredicates;
-import forge.game.card.CounterType;
 import forge.game.cost.Cost;
 import forge.game.phase.PhaseHandler;
 import forge.game.phase.PhaseType;
@@ -28,6 +20,9 @@ import forge.game.spellability.TargetRestrictions;
 import forge.game.zone.ZoneType;
 import forge.util.Aggregates;
 
+import java.util.List;
+import java.util.Map;
+
 public class DamageDealAi extends DamageAiBase {
     @Override
     public boolean chkAIDrawback(SpellAbility sa, Player ai) {
@@ -98,6 +93,29 @@ public class DamageDealAi extends DamageAiBase {
                 source.setSVar("PayX", Integer.toString(dmg));
             } else if (sa.getSVar(damage).equals("Count$CardsInYourHand") && source.getZone().is(ZoneType.Hand)) {
                 dmg--; // the card will be spent casting the spell, so actual damage is 1 less
+            } else if (sa.getSVar(damage).equals("TargetedPlayer$CardsInHand")) {
+                // cards that deal damage by the number of cards in target player's hand, e.g. Sudden Impact
+                if (sa.getTargetRestrictions().canTgtPlayer()) {
+                    int maxDmg = 0;
+                    Player maxDamaged = null;
+                    for (Player p : ai.getOpponents()) {
+                        if (p.canBeTargetedBy(sa)) {
+                            if (p.getCardsIn(ZoneType.Hand).size() > maxDmg) {
+                                maxDmg = p.getCardsIn(ZoneType.Hand).size();
+                                maxDamaged = p;
+                            }
+                        }
+                    }
+                    if (maxDmg > 0 && maxDamaged != null) {
+                        if (shouldTgtP(ai, sa, maxDmg, false)) {
+                            sa.resetTargets();
+                            sa.getTargets().add(maxDamaged);
+                            return true;
+                        }
+                    } else {
+                        return false;
+                    }
+                }
             }
         }
 
@@ -105,9 +123,20 @@ public class DamageDealAi extends DamageAiBase {
             dmg += 2;
         }
         
-        String logic = sa.getParam("AILogic");
+        String logic = sa.getParamOrDefault("AILogic", "");
         if ("DiscardLands".equals(logic)) {
             dmg = 2;
+        } else if (logic.startsWith("ProcRaid.")) {
+            if (ai.getGame().getPhaseHandler().isPlayerTurn(ai) && ai.getGame().getPhaseHandler().getPhase().isBefore(PhaseType.COMBAT_DECLARE_BLOCKERS)) {
+                for (Card potentialAtkr : ai.getCreaturesInPlay()) {
+                    if (ComputerUtilCard.doesCreatureAttackAI(ai, potentialAtkr)) {
+                        return false;
+                    }
+                }
+            }
+            if (ai.getAttackedWithCreatureThisTurn()) {
+                dmg = Integer.parseInt(logic.substring(logic.indexOf(".") + 1));
+            }
         } else if ("WildHunt".equals(logic)) {
             // This dummy ability will just deal 0 damage, but holds the logic for the AI for Master of Wild Hunt
             List<Card> wolves = CardLists.getValidCards(ai.getCardsIn(ZoneType.Battlefield), "Creature.Wolf+untapped+YouCtrl+Other", ai, source);
@@ -157,7 +186,7 @@ public class DamageDealAi extends DamageAiBase {
             return false;
         }
 
-        if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source)) {
+        if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source, sa)) {
             return false;
         }
 
@@ -345,7 +374,7 @@ public class DamageDealAi extends DamageAiBase {
         final boolean divided = sa.hasParam("DividedAsYouChoose");
         final boolean oppTargetsChoice = sa.hasParam("TargetingPlayer");
 
-        Player enemy = ai.getOpponent();
+        Player enemy = ComputerUtil.getOpponentFor(ai);
 
         if ("PowerDmg".equals(sa.getParam("AILogic"))) {
             // check if it is better to target the player instead, the original target is already set in PumpAi.pumpTgtAI()
@@ -377,7 +406,7 @@ public class DamageDealAi extends DamageAiBase {
         }
         if ("Polukranos".equals(sa.getParam("AILogic"))) {
             int dmgTaken = 0;
-            CardCollection humCreatures = ai.getOpponent().getCreaturesInPlay();
+            CardCollection humCreatures = enemy.getCreaturesInPlay();
             Card lastTgt = null;
             humCreatures = CardLists.getTargetableCards(humCreatures, sa);
             ComputerUtilCard.sortByEvaluateCreature(humCreatures);
@@ -633,7 +662,7 @@ public class DamageDealAi extends DamageAiBase {
         // this is for Triggered targets that are mandatory
         final boolean noPrevention = sa.hasParam("NoPrevention");
         final boolean divided = sa.hasParam("DividedAsYouChoose");
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
         System.out.println("damageChooseRequiredTargets " + ai + " " + sa);
 
         while (sa.getTargets().getNumTargeted() < tgt.getMinTargets(sa.getHostCard(), sa)) {

forge-ai/src/main/java/forge/ai/ability/DamageEachAi.java

@@ -3,10 +3,6 @@ package forge.ai.ability;
 
 import forge.ai.SpecialCardAi;
 import forge.game.ability.AbilityUtils;
-import forge.game.card.Card;
-import forge.game.card.CardCollection;
-import forge.game.card.CardLists;
-import forge.game.card.CardPredicates;
 import forge.game.player.Player;
 import forge.game.player.PlayerCollection;
 import forge.game.player.PlayerPredicates;

forge-ai/src/main/java/forge/ai/ability/DamagePreventAi.java

@@ -42,7 +42,7 @@ public class DamagePreventAi extends SpellAbilityAi {
             return false;
         }
 
-        if (!ComputerUtilCost.checkSacrificeCost(ai, cost, hostCard)) {
+        if (!ComputerUtilCost.checkSacrificeCost(ai, cost, hostCard, sa)) {
             return false;
         }
 

forge-ai/src/main/java/forge/ai/ability/DamagePreventAllAi.java

@@ -30,7 +30,7 @@ public class DamagePreventAllAi extends SpellAbilityAi {
             return false;
         }
 
-        if (!ComputerUtilCost.checkSacrificeCost(ai, cost, hostCard)) {
+        if (!ComputerUtilCost.checkSacrificeCost(ai, cost, hostCard, sa)) {
             return false;
         }
 

forge-ai/src/main/java/forge/ai/ability/DebuffAi.java

@@ -4,6 +4,7 @@ import com.google.common.base.Predicate;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
 
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilCard;
 import forge.ai.ComputerUtilCost;
 import forge.ai.SpellAbilityAi;
@@ -42,7 +43,7 @@ public class DebuffAi extends SpellAbilityAi {
         final Cost cost = sa.getPayCosts();
 
         // temporarily disabled until AI is improved
-        if (!ComputerUtilCost.checkCreatureSacrificeCost(ai, cost, source)) {
+        if (!ComputerUtilCost.checkCreatureSacrificeCost(ai, cost, source, sa)) {
             return false;
         }
 
@@ -176,7 +177,7 @@ public class DebuffAi extends SpellAbilityAi {
      * @return a CardCollection.
      */
     private CardCollection getCurseCreatures(final Player ai, final SpellAbility sa, final List<String> kws) {
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
         CardCollection list = CardLists.getTargetableCards(opp.getCreaturesInPlay(), sa);
         if (!list.isEmpty()) {
             list = CardLists.filter(list, new Predicate<Card>() {
@@ -216,7 +217,7 @@ public class DebuffAi extends SpellAbilityAi {
             list.remove(c);
         }
 
-        final CardCollection pref = CardLists.filterControlledBy(list, ai.getOpponent());
+        final CardCollection pref = CardLists.filterControlledBy(list, ComputerUtil.getOpponentFor(ai));
         final CardCollection forced = CardLists.filterControlledBy(list, ai);
         final Card source = sa.getHostCard();
 

forge-ai/src/main/java/forge/ai/ability/DestroyAi.java

@@ -1,24 +1,10 @@
 package forge.ai.ability;
 
 import com.google.common.base.Predicate;
-import forge.ai.AiController;
+import forge.ai.*;
-import forge.ai.AiProps;
-
-import forge.ai.ComputerUtil;
-import forge.ai.ComputerUtilCard;
-import forge.ai.ComputerUtilCost;
-import forge.ai.ComputerUtilMana;
-import forge.ai.PlayerControllerAi;
-import forge.ai.SpecialCardAi;
-import forge.ai.SpellAbilityAi;
 import forge.game.ability.AbilityUtils;
 import forge.game.ability.ApiType;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
-import forge.game.card.CardFactoryUtil;
-import forge.game.card.CardLists;
-import forge.game.card.CardPredicates;
-import forge.game.card.CounterType;
 import forge.game.cost.Cost;
 import forge.game.cost.CostPart;
 import forge.game.cost.CostSacrifice;
@@ -49,7 +35,7 @@ public class DestroyAi extends SpellAbilityAi {
         CardCollection list;
 
         if (abCost != null) {
-            if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source)) {
+            if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source, sa)) {
                 return false;
             }
 
@@ -78,6 +64,11 @@ public class DestroyAi extends SpellAbilityAi {
             }
             if ("MadSarkhanDragon".equals(logic)) {
                 return SpecialCardAi.SarkhanTheMad.considerMakeDragon(ai, sa);
+            } else if (logic != null && logic.startsWith("MinLoyalty.")) {
+                int minLoyalty = Integer.parseInt(logic.substring(logic.indexOf(".") + 1));
+                if (source.getCounters(CounterType.LOYALTY) < minLoyalty) {
+                    return false;
+                }
             } else if ("Polymorph".equals(logic)) {
                 list = CardLists.getTargetableCards(ai.getCardsIn(ZoneType.Battlefield), sa);
                 if (list.isEmpty()) {
@@ -267,7 +258,7 @@ public class DestroyAi extends SpellAbilityAi {
         } else if (sa.hasParam("Defined")) {
             list = AbilityUtils.getDefinedCards(source, sa.getParam("Defined"), sa);
             if ("WillSkipTurn".equals(logic) && (sa.getHostCard().getController().equals(ai)
-                || ai.getCreaturesInPlay().size() < ai.getOpponent().getCreaturesInPlay().size()
+                || ai.getCreaturesInPlay().size() < ComputerUtil.getOpponentFor(ai).getCreaturesInPlay().size()
                 || !source.getGame().getPhaseHandler().isPlayerTurn(ai)
                 || ai.getLife() <= 5)) {
                 // Basic ai logic for Lethal Vapors

forge-ai/src/main/java/forge/ai/ability/DestroyAllAi.java

@@ -64,7 +64,7 @@ public class DestroyAllAi extends SpellAbilityAi {
 
     public boolean doMassRemovalLogic(Player ai, SpellAbility sa) {
         final Card source = sa.getHostCard();
-        Player opponent = ai.getOpponent(); // TODO: how should this AI logic work for multiplayer and getOpponents()?
+        Player opponent = ComputerUtil.getOpponentFor(ai); // TODO: how should this AI logic work for multiplayer and getOpponents()?
 
         final int CREATURE_EVAL_THRESHOLD = 200;
 

forge-ai/src/main/java/forge/ai/ability/DigAi.java

@@ -9,7 +9,6 @@ import forge.ai.SpellAbilityAi;
 import forge.game.Game;
 import forge.game.ability.AbilityUtils;
 import forge.game.card.Card;
-import forge.game.card.CounterType;
 import forge.game.phase.PhaseType;
 import forge.game.player.Player;
 import forge.game.player.PlayerActionConfirmMode;
@@ -26,7 +25,7 @@ public class DigAi extends SpellAbilityAi {
     @Override
     protected boolean canPlayAI(Player ai, SpellAbility sa) {
         final Game game = ai.getGame();
-        Player opp = ai.getOpponent();
+        Player opp = ComputerUtil.getOpponentFor(ai);
         final Card host = sa.getHostCard();
         Player libraryOwner = ai;
 
@@ -103,7 +102,7 @@ public class DigAi extends SpellAbilityAi {
 
     @Override
     protected boolean doTriggerAINoCost(Player ai, SpellAbility sa, boolean mandatory) {
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
         if (sa.usesTargeting()) {
             sa.resetTargets();
             if (mandatory && sa.canTarget(opp)) {

forge-ai/src/main/java/forge/ai/ability/DigUntilAi.java

@@ -1,5 +1,6 @@
 package forge.ai.ability;
 
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilMana;
 import forge.ai.SpellAbilityAi;
 import forge.game.card.Card;
@@ -20,6 +21,7 @@ public class DigUntilAi extends SpellAbilityAi {
     @Override
     protected boolean canPlayAI(Player ai, SpellAbility sa) {
         Card source = sa.getHostCard();
+        final String logic = sa.getParamOrDefault("AILogic", "");
         double chance = .4; // 40 percent chance with instant speed stuff
         if (SpellAbilityAi.isSorcerySpeed(sa)) {
             chance = .667; // 66.7% chance for sorcery speed (since it will
@@ -29,7 +31,22 @@ public class DigUntilAi extends SpellAbilityAi {
         final boolean randomReturn = r.nextFloat() <= Math.pow(chance, sa.getActivationsThisTurn() + 1);
 
         Player libraryOwner = ai;
-        Player opp = ai.getOpponent();
+        Player opp = ComputerUtil.getOpponentFor(ai);
+
+        if ("DontMillSelf".equals(logic)) {
+            // A card that digs for specific things and puts everything revealed before it into graveyard
+            // (e.g. Hermit Druid) - don't use it to mill itself and also make sure there's enough playable
+            // material in the library after using it several times.
+            // TODO: maybe this should happen for any DigUntil SA with RevealedDestination$ Graveyard?
+            if (ai.getCardsIn(ZoneType.Library).size() < 20) {
+                return false;
+            }
+            if ("Land.Basic".equals(sa.getParam("Valid"))
+                    && !CardLists.filter(ai.getCardsIn(ZoneType.Hand), CardPredicates.Presets.LANDS_PRODUCING_MANA).isEmpty()) {
+                // We already have a mana-producing land in hand, so bail
+                return false;
+            }
+        }
 
         if (sa.usesTargeting()) {
             sa.resetTargets();

forge-ai/src/main/java/forge/ai/ability/DiscardAi.java

@@ -1,10 +1,6 @@
 package forge.ai.ability;
 
-import forge.ai.ComputerUtil;
+import forge.ai.*;
-import forge.ai.ComputerUtilAbility;
-import forge.ai.ComputerUtilCost;
-import forge.ai.ComputerUtilMana;
-import forge.ai.SpellAbilityAi;
 import forge.game.ability.AbilityUtils;
 import forge.game.card.Card;
 import forge.game.cost.Cost;
@@ -27,10 +23,11 @@ public class DiscardAi extends SpellAbilityAi {
         final Card source = sa.getHostCard();
         final String sourceName = ComputerUtilAbility.getAbilitySourceName(sa);
         final Cost abCost = sa.getPayCosts();
+        final String aiLogic = sa.getParamOrDefault("AILogic", "");
 
         if (abCost != null) {
             // AI currently disabled for these costs
-            if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source)) {
+            if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source, sa)) {
                 return false;
             }
 
@@ -53,7 +50,11 @@ public class DiscardAi extends SpellAbilityAi {
             return MyRandom.getRandom().nextFloat() < (1.0 / (1 + hand));
         }
 
-        final boolean humanHasHand = ai.getOpponent().getCardsIn(ZoneType.Hand).size() > 0;
+        if (aiLogic.equals("VolrathsShapeshifter")) {
+            return SpecialCardAi.VolrathsShapeshifter.consider(ai, sa);
+        }
+
+        final boolean humanHasHand = ComputerUtil.getOpponentFor(ai).getCardsIn(ZoneType.Hand).size() > 0;
 
         if (tgt != null) {
             if (!discardTargetAI(ai, sa)) {
@@ -84,7 +85,7 @@ public class DiscardAi extends SpellAbilityAi {
         if (sa.hasParam("NumCards")) {
            if (sa.getParam("NumCards").equals("X") && source.getSVar("X").equals("Count$xPaid")) {
                 // Set PayX here to maximum value.
-                final int cardsToDiscard = Math.min(ComputerUtilMana.determineLeftoverMana(sa, ai), ai.getOpponent()
+                final int cardsToDiscard = Math.min(ComputerUtilMana.determineLeftoverMana(sa, ai), ComputerUtil.getOpponentFor(ai)
                         .getCardsIn(ZoneType.Hand).size());
                 if (cardsToDiscard < 1) {
                     return false;
@@ -120,7 +121,7 @@ public class DiscardAi extends SpellAbilityAi {
 
     private boolean discardTargetAI(final Player ai, final SpellAbility sa) {
         final TargetRestrictions tgt = sa.getTargetRestrictions();
-        Player opp = ai.getOpponent();
+        Player opp = ComputerUtil.getOpponentFor(ai);
         if (opp.getCardsIn(ZoneType.Hand).isEmpty() && !ComputerUtil.activateForCost(sa, ai)) {
             return false;
         }
@@ -139,7 +140,7 @@ public class DiscardAi extends SpellAbilityAi {
     protected boolean doTriggerAINoCost(Player ai, SpellAbility sa, boolean mandatory) {
         final TargetRestrictions tgt = sa.getTargetRestrictions();
         if (tgt != null) {
-            Player opp = ai.getOpponent();
+            Player opp = ComputerUtil.getOpponentFor(ai);
             if (!discardTargetAI(ai, sa)) {
                 if (mandatory && sa.canTarget(opp)) {
                     sa.getTargets().add(opp);
@@ -160,7 +161,7 @@ public class DiscardAi extends SpellAbilityAi {
             }
             if ("X".equals(sa.getParam("RevealNumber")) && sa.getHostCard().getSVar("X").equals("Count$xPaid")) {
                 // Set PayX here to maximum value.
-                final int cardsToDiscard = Math.min(ComputerUtilMana.determineLeftoverMana(sa, ai), ai.getOpponent()
+                final int cardsToDiscard = Math.min(ComputerUtilMana.determineLeftoverMana(sa, ai), ComputerUtil.getOpponentFor(ai)
                         .getCardsIn(ZoneType.Hand).size());
                 sa.getHostCard().setSVar("PayX", Integer.toString(cardsToDiscard));
             }

forge-ai/src/main/java/forge/ai/ability/DrainManaAi.java

@@ -1,5 +1,6 @@
 package forge.ai.ability;
 
+import forge.ai.ComputerUtil;
 import forge.ai.SpellAbilityAi;
 import forge.game.ability.AbilityUtils;
 import forge.game.card.Card;
@@ -19,7 +20,7 @@ public class DrainManaAi extends SpellAbilityAi {
 
         final TargetRestrictions tgt = sa.getTargetRestrictions();
         final Card source = sa.getHostCard();
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
         final Random r = MyRandom.getRandom();
         boolean randomReturn = r.nextFloat() <= Math.pow(.6667, sa.getActivationsThisTurn());
 
@@ -42,7 +43,7 @@ public class DrainManaAi extends SpellAbilityAi {
 
     @Override
     protected boolean doTriggerAINoCost(Player ai, SpellAbility sa, boolean mandatory) {
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
 
         final TargetRestrictions tgt = sa.getTargetRestrictions();
         final Card source = sa.getHostCard();
@@ -83,7 +84,7 @@ public class DrainManaAi extends SpellAbilityAi {
             }
         } else {
             sa.resetTargets();
-            sa.getTargets().add(ai.getOpponent());
+            sa.getTargets().add(ComputerUtil.getOpponentFor(ai));
         }
 
         return randomReturn;

forge-ai/src/main/java/forge/ai/ability/DrawAi.java

@@ -86,7 +86,7 @@ public class DrawAi extends SpellAbilityAi {
      */
     @Override
     protected boolean willPayCosts(Player ai, SpellAbility sa, Cost cost, Card source) {
-        if (!ComputerUtilCost.checkCreatureSacrificeCost(ai, cost, source)) {
+        if (!ComputerUtilCost.checkCreatureSacrificeCost(ai, cost, source, sa)) {
             return false;
         }
 
@@ -126,6 +126,16 @@ public class DrawAi extends SpellAbilityAi {
      */
     @Override
     protected boolean checkPhaseRestrictions(Player ai, SpellAbility sa, PhaseHandler ph) {
+        String logic = sa.getParamOrDefault("AILogic", "");
+
+        if (logic.startsWith("LifeLessThan.")) {
+            // LifeLessThan logic presupposes activation as soon as possible in an
+            // attempt to save the AI from dying
+            return true;
+        } else if (logic.equals("AtEndOfOppTurn")) {
+            return ph.is(PhaseType.END_OF_TURN) && ph.getNextTurn().equals(ai);
+        }
+
         // Don't use draw abilities before main 2 if possible
         if (ph.getPhase().isBefore(PhaseType.MAIN2) && !sa.hasParam("ActivationPhases")
                 && !ComputerUtil.castSpellInMain1(ai, sa)) {
@@ -204,6 +214,7 @@ public class DrawAi extends SpellAbilityAi {
         final Card source = sa.getHostCard();
         final boolean drawback = sa.getParent() != null;
         final Game game = ai.getGame();
+        final String logic = sa.getParamOrDefault("AILogic", "");
 
         int computerHandSize = ai.getCardsIn(ZoneType.Hand).size();
         final int computerLibrarySize = ai.getCardsIn(ZoneType.Library).size();
@@ -241,10 +252,8 @@ public class DrawAi extends SpellAbilityAi {
         }
 
         // Logic for cards that require special handling
-        if (sa.hasParam("AILogic")) {
+        if ("YawgmothsBargain".equals(logic)) {
-            if ("YawgmothsBargain".equals(sa.getParam("AILogic"))) {
+            return SpecialCardAi.YawgmothsBargain.consider(ai, sa);
-                return SpecialCardAi.YawgmothsBargain.consider(ai, sa);
-            }
         }
 
         // Generic logic for all cards that do not need any special handling
@@ -312,6 +321,13 @@ public class DrawAi extends SpellAbilityAi {
                         return true;
                     }
                 }
+                // we're trying to save ourselves from death
+                // (e.g. Bargain), so target the opp anyway
+                if (logic.startsWith("LifeLessThan.")) {
+                    int threshold = Integer.parseInt(logic.substring(logic.indexOf(".") + 1));
+                    sa.getTargets().add(oppA);
+                    return ai.getLife() < threshold;
+                }
             }
             
             boolean aiTarget = sa.canTarget(ai);

forge-ai/src/main/java/forge/ai/ability/EffectAi.java

@@ -4,6 +4,7 @@ import java.util.List;
 import java.util.Random;
 
 import com.google.common.base.Predicate;
+import com.google.common.base.Predicates;
 import com.google.common.collect.Iterables;
 
 import forge.ai.ComputerUtil;
@@ -15,8 +16,7 @@ import forge.ai.SpellApiToAi;
 import forge.game.Game;
 import forge.game.GlobalRuleChange;
 import forge.game.ability.ApiType;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardLists;
 import forge.game.combat.CombatUtil;
 import forge.game.phase.PhaseHandler;
 import forge.game.phase.PhaseType;
@@ -48,6 +48,21 @@ public class EffectAi extends SpellAbilityAi {
                     return false;
                 }
                 randomReturn = true;
+            } else if (logic.equals("KeepOppCreatsLandsTapped")) {
+                for (Player opp : ai.getOpponents()) {
+                    boolean worthHolding = false;
+                    CardCollectionView oppCreatsLands = CardLists.filter(opp.getCardsIn(ZoneType.Battlefield),
+                        Predicates.or(CardPredicates.Presets.LANDS, CardPredicates.Presets.CREATURES));
+                    CardCollectionView oppCreatsLandsTapped = CardLists.filter(oppCreatsLands, CardPredicates.Presets.TAPPED);
+
+                    if (oppCreatsLandsTapped.size() >= 3 || oppCreatsLands.size() == oppCreatsLandsTapped.size()) {
+                        worthHolding = true;
+                    }
+                    if (!worthHolding) {
+                        return false;
+                    }
+                    randomReturn = true;
+                }
             } else if (logic.equals("Fog")) {
                 if (game.getPhaseHandler().isPlayerTurn(sa.getActivatingPlayer())) {
                     return false;
@@ -179,9 +194,7 @@ public class EffectAi extends SpellAbilityAi {
                     break;
                 }
 
-                if (shouldPlay) {
+                return shouldPlay;
-                    return true;
-                }
             } else if (logic.equals("RedirectSpellDamageFromPlayer")) {
                 if (game.getStack().isEmpty()) {
                     return false;
@@ -246,6 +259,12 @@ public class EffectAi extends SpellAbilityAi {
                     }
                 }
                 return true;
+            } else if (logic.equals("CastFromGraveThisTurn")) {
+                CardCollection list = new CardCollection(game.getCardsIn(ZoneType.Graveyard));
+                list = CardLists.getValidCards(list, sa.getTargetRestrictions().getValidTgts(), ai, sa.getHostCard(), sa);
+                if (!ComputerUtil.targetPlayableSpellCard(ai, list, sa, false)) {
+                    return false;
+                }
             }
         } else { //no AILogic
             return false;
@@ -281,4 +300,35 @@ public class EffectAi extends SpellAbilityAi {
 
         return randomReturn;
     }
+
+    @Override
+    protected boolean doTriggerAINoCost(final Player aiPlayer, final SpellAbility sa, final boolean mandatory) {
+        String aiLogic = sa.getParamOrDefault("AILogic", "");
+
+        // E.g. Nova Pentacle
+        if (aiLogic.equals("RedirectFromOppToCreature")) {
+            // try to target the opponent's best targetable permanent, if able
+            CardCollection oppPerms = CardLists.getValidCards(aiPlayer.getOpponents().getCardsIn(ZoneType.Battlefield), sa.getTargetRestrictions().getValidTgts(), aiPlayer, sa.getHostCard(), sa);
+            if (!oppPerms.isEmpty()) {
+                sa.resetTargets();
+                sa.getTargets().add(ComputerUtilCard.getBestAI(oppPerms));
+                return true;
+            }
+
+            if (mandatory) {
+                // try to target the AI's worst targetable permanent, if able
+                CardCollection aiPerms = CardLists.getValidCards(aiPlayer.getCardsIn(ZoneType.Battlefield), sa.getTargetRestrictions().getValidTgts(), aiPlayer, sa.getHostCard(), sa);
+                if (!aiPerms.isEmpty()) {
+                    sa.resetTargets();
+                    sa.getTargets().add(ComputerUtilCard.getWorstAI(aiPerms));
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        return super.doTriggerAINoCost(aiPlayer, sa, mandatory);
+
+    }
 }

forge-ai/src/main/java/forge/ai/ability/ExploreAi.java

@@ -0,0 +1,52 @@
+package forge.ai.ability;
+
+
+import forge.ai.*;
+import forge.game.card.*;
+import forge.game.player.Player;
+import forge.game.spellability.SpellAbility;
+import forge.game.zone.ZoneType;
+
+public class ExploreAi extends SpellAbilityAi {
+    /* (non-Javadoc)
+     * @see forge.card.abilityfactory.SpellAiLogic#canPlayAI(forge.game.player.Player, java.util.Map, forge.card.spellability.SpellAbility)
+     */
+    @Override
+    protected boolean canPlayAI(Player aiPlayer, SpellAbility sa) {
+        return true;
+    }
+
+    public static Card shouldPutInGraveyard(CardCollection top, Player ai) {
+        int predictedMana = ComputerUtilMana.getAvailableManaSources(ai, false).size();
+        CardCollectionView cardsOTB = ai.getCardsIn(ZoneType.Battlefield);
+        CardCollectionView cardsInHand = ai.getCardsIn(ZoneType.Hand);
+        CardCollection landsOTB = CardLists.filter(cardsOTB, CardPredicates.Presets.LANDS_PRODUCING_MANA);
+        CardCollection landsInHand = CardLists.filter(cardsInHand, CardPredicates.Presets.LANDS_PRODUCING_MANA);
+
+        int maxCMCDiff = 1;
+        int numLandsToStillNeedMore = 2;
+
+        if (ai.getController().isAI()) {
+            AiController aic = ((PlayerControllerAi)ai.getController()).getAi();
+            maxCMCDiff = aic.getIntProperty(AiProps.EXPLORE_MAX_CMC_DIFF_TO_PUT_IN_GRAVEYARD);
+            numLandsToStillNeedMore = aic.getIntProperty(AiProps.EXPLORE_NUM_LANDS_TO_STILL_NEED_MORE);
+        }
+
+        if (!top.isEmpty()) {
+            Card topCard = top.getFirst();
+            if (landsInHand.isEmpty() && landsOTB.size() <= numLandsToStillNeedMore) {
+                // We need more lands to improve our mana base, explore away the non-lands
+                return topCard;
+            }
+            if (topCard.getCMC() - maxCMCDiff >= predictedMana && !topCard.hasSVar("DoNotDiscardIfAble")) {
+                // We're not casting this in foreseeable future, put it in the graveyard
+                return topCard;
+            }
+        }
+
+        // Put on top of the library (do not mark the card for placement in the graveyard)
+        return null;
+    }
+
+}
+

forge-ai/src/main/java/forge/ai/ability/FogAi.java

@@ -1,12 +1,16 @@
 package forge.ai.ability;
 
 
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilCombat;
 import forge.ai.SpellAbilityAi;
 import forge.game.Game;
+import forge.game.card.Card;
+import forge.game.card.CardPredicates;
 import forge.game.phase.PhaseType;
 import forge.game.player.Player;
 import forge.game.spellability.SpellAbility;
+import forge.util.Aggregates;
 
 public class FogAi extends SpellAbilityAi {
 
@@ -34,6 +38,25 @@ public class FogAi extends SpellAbilityAi {
             return false;
         }
 
+        if ("SeriousDamage".equals(sa.getParam("AILogic")) && game.getCombat() != null) {
+            int dmg = 0;
+            for (Card atk : game.getCombat().getAttackersOf(ai)) {
+                if (game.getCombat().isUnblocked(atk)) {
+                    dmg += atk.getNetCombatDamage();
+                } else if (atk.hasKeyword("Trample")) {
+                    dmg += atk.getNetCombatDamage() - Aggregates.sum(game.getCombat().getBlockers(atk), CardPredicates.Accessors.fnGetNetToughness);
+                }
+            }
+
+            if (dmg > ai.getLife() / 4) {
+                return true;
+            } else if (dmg >= 5) {
+                return true;
+            } else if (ai.getLife() < ai.getStartingLife() / 3) {
+                return true;
+            }
+        }
+
         // Cast it if life is in danger
         return ComputerUtilCombat.lifeInDanger(ai, game.getCombat());
     }
@@ -58,7 +81,7 @@ public class FogAi extends SpellAbilityAi {
     protected boolean doTriggerAINoCost(Player aiPlayer, SpellAbility sa, boolean mandatory) {
         final Game game = aiPlayer.getGame();
         boolean chance;
-        if (game.getPhaseHandler().isPlayerTurn(sa.getActivatingPlayer().getOpponent())) {
+        if (game.getPhaseHandler().isPlayerTurn(ComputerUtil.getOpponentFor(sa.getActivatingPlayer()))) {
             chance = game.getPhaseHandler().getPhase().isBefore(PhaseType.COMBAT_FIRST_STRIKE_DAMAGE);
         } else {
             chance = game.getPhaseHandler().getPhase().isAfter(PhaseType.COMBAT_DAMAGE);

forge-ai/src/main/java/forge/ai/ability/GameLossAi.java

@@ -1,5 +1,6 @@
 package forge.ai.ability;
 
+import forge.ai.ComputerUtil;
 import forge.ai.SpellAbilityAi;
 import forge.game.player.Player;
 import forge.game.spellability.SpellAbility;
@@ -8,7 +9,7 @@ import forge.game.spellability.TargetRestrictions;
 public class GameLossAi extends SpellAbilityAi {
     @Override
     protected boolean canPlayAI(Player ai, SpellAbility sa) {
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
         if (opp.cantLose()) {
             return false;
         }
@@ -34,14 +35,14 @@ public class GameLossAi extends SpellAbilityAi {
         // (Final Fortune would need to attach it's delayed trigger to a
         // specific turn, which can't be done yet)
 
-        if (!mandatory && ai.getOpponent().cantLose()) {
+        if (!mandatory && ComputerUtil.getOpponentFor(ai).cantLose()) {
             return false;
         }
 
         final TargetRestrictions tgt = sa.getTargetRestrictions();
         if (tgt != null) {
             sa.resetTargets();
-            sa.getTargets().add(ai.getOpponent());
+            sa.getTargets().add(ComputerUtil.getOpponentFor(ai));
         }
 
         return true;

forge-ai/src/main/java/forge/ai/ability/LifeExchangeAi.java

@@ -1,5 +1,6 @@
 package forge.ai.ability;
 
+import forge.ai.ComputerUtil;
 import forge.ai.SpellAbilityAi;
 import forge.game.player.Player;
 import forge.game.spellability.SpellAbility;
@@ -22,7 +23,7 @@ public class LifeExchangeAi extends SpellAbilityAi {
     protected boolean canPlayAI(Player aiPlayer, SpellAbility sa) {
         final Random r = MyRandom.getRandom();
         final int myLife = aiPlayer.getLife();
-        Player opponent = aiPlayer.getOpponent();
+        Player opponent = ComputerUtil.getOpponentFor(aiPlayer);
         final int hLife = opponent.getLife();
 
         if (!aiPlayer.canGainLife()) {
@@ -78,7 +79,7 @@ public class LifeExchangeAi extends SpellAbilityAi {
     final boolean mandatory) {
 
         final TargetRestrictions tgt = sa.getTargetRestrictions();
-        Player opp = ai.getOpponent();
+        Player opp = ComputerUtil.getOpponentFor(ai);
         if (tgt != null) {
             sa.resetTargets();
             if (sa.canTarget(opp) && (mandatory || ai.getLife() < opp.getLife())) {

forge-ai/src/main/java/forge/ai/ability/LifeGainAi.java

@@ -1,10 +1,13 @@
 package forge.ai.ability;
 
+import com.google.common.collect.Iterables;
 import forge.ai.*;
 import forge.game.Game;
 import forge.game.ability.AbilityUtils;
 import forge.game.card.Card;
 import forge.game.cost.Cost;
+import forge.game.cost.CostRemoveCounter;
+import forge.game.cost.CostSacrifice;
 import forge.game.phase.PhaseHandler;
 import forge.game.phase.PhaseType;
 import forge.game.player.Player;
@@ -35,7 +38,7 @@ public class LifeGainAi extends SpellAbilityAi {
 
         if (!lifeCritical) {
             // return super.willPayCosts(ai, sa, cost, source);
-            if (!ComputerUtilCost.checkSacrificeCost(ai, cost, source, false)) {
+            if (!ComputerUtilCost.checkSacrificeCost(ai, cost, source, sa,false)) {
                 return false;
             }
             if (!ComputerUtilCost.checkLifeCost(ai, cost, source, 4, sa)) {
@@ -60,7 +63,7 @@ public class LifeGainAi extends SpellAbilityAi {
                 skipCheck |= ComputerUtilCost.isSacrificeSelfCost(cost) && !source.isCreature();
 
                 if (!skipCheck) {
-                    if (!ComputerUtilCost.checkSacrificeCost(ai, cost, source, false)) {
+                    if (!ComputerUtilCost.checkSacrificeCost(ai, cost, source, sa,false)) {
                         return false;
                     }
                 }
@@ -80,6 +83,23 @@ public class LifeGainAi extends SpellAbilityAi {
         lifeCritical |= ph.getPhase().isBefore(PhaseType.COMBAT_DAMAGE)
                 && ComputerUtilCombat.lifeInDanger(ai, game.getCombat());
 
+        // When life is critical but there is no immediate danger, try to wait until declare blockers
+        // before using the lifegain ability if it's an ability on a creature with a detrimental activation cost
+        if (lifeCritical
+                && sa.isAbility()
+                && sa.getHostCard() != null && sa.getHostCard().isCreature()
+                && sa.getPayCosts() != null
+                && (sa.getPayCosts().hasSpecificCostType(CostRemoveCounter.class) || sa.getPayCosts().hasSpecificCostType(CostSacrifice.class))) {
+            if (!game.getStack().isEmpty()) {
+                SpellAbility saTop = game.getStack().peekAbility();
+                if (saTop.getTargets() != null && Iterables.contains(saTop.getTargets().getTargetPlayers(), ai)) {
+                    return ComputerUtil.predictDamageFromSpell(saTop, ai) > 0;
+                }
+            }
+            if (game.getCombat() == null) { return false; }
+            if (!ph.is(PhaseType.COMBAT_DECLARE_BLOCKERS)) { return false; }
+        }
+
         // Don't use lifegain before main 2 if possible
         if (!lifeCritical && ph.getPhase().isBefore(PhaseType.MAIN2) && !sa.hasParam("ActivationPhases")
                 && !ComputerUtil.castSpellInMain1(ai, sa)) {

forge-ai/src/main/java/forge/ai/ability/LifeSetAi.java

@@ -1,5 +1,6 @@
 package forge.ai.ability;
 
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilAbility;
 import forge.ai.ComputerUtilMana;
 import forge.ai.SpellAbilityAi;
@@ -22,7 +23,7 @@ public class LifeSetAi extends SpellAbilityAi {
         // Ability_Cost abCost = sa.getPayCosts();
         final Card source = sa.getHostCard();
         final int myLife = ai.getLife();
-        final Player opponent = ai.getOpponent();
+        final Player opponent = ComputerUtil.getOpponentFor(ai);
         final int hlife = opponent.getLife();
         final String amountStr = sa.getParam("LifeAmount");
 
@@ -93,7 +94,7 @@ public class LifeSetAi extends SpellAbilityAi {
                     }
                 }
             }
-            if (amount < myLife) {
+            if (amount <= myLife) {
                 return false;
             }
         }
@@ -109,7 +110,7 @@ public class LifeSetAi extends SpellAbilityAi {
     @Override
     protected boolean doTriggerAINoCost(Player ai, SpellAbility sa, boolean mandatory) {
         final int myLife = ai.getLife();
-        final Player opponent = ai.getOpponent();
+        final Player opponent = ComputerUtil.getOpponentFor(ai);
         final int hlife = opponent.getLife();
         final Card source = sa.getHostCard();
         final String sourceName = ComputerUtilAbility.getAbilitySourceName(sa);

forge-ai/src/main/java/forge/ai/ability/ManaEffectAi.java

@@ -12,10 +12,9 @@ import forge.card.ColorSet;
 import forge.card.MagicColor;
 import forge.card.mana.ManaCost;
 import forge.game.ability.AbilityUtils;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
+import forge.game.cost.CostPart;
-import forge.game.card.CardLists;
+import forge.game.cost.CostRemoveCounter;
-import forge.game.card.CardPredicates;
 import forge.game.phase.PhaseHandler;
 import forge.game.phase.PhaseType;
 import forge.game.player.Player;
@@ -110,13 +109,28 @@ public class ManaEffectAi extends SpellAbilityAi {
     private boolean doManaRitualLogic(Player ai, SpellAbility sa) {
         final Card host = sa.getHostCard();
           
-        CardCollection manaSources = ComputerUtilMana.getAvailableMana(ai, true);
+        CardCollection manaSources = ComputerUtilMana.getAvailableManaSources(ai, true);
         int numManaSrcs = manaSources.size();
         int manaReceived = sa.hasParam("Amount") ? AbilityUtils.calculateAmount(host, sa.getParam("Amount"), sa) : 1;
         manaReceived *= sa.getParam("Produced").split(" ").length;
 
         int selfCost = sa.getPayCosts().getCostMana() != null ? sa.getPayCosts().getCostMana().getMana().getCMC() : 0;
-        byte producedColor = MagicColor.fromName(sa.getParam("Produced"));
+
+        String produced = sa.getParam("Produced");
+        byte producedColor = produced.equals("Any") ? MagicColor.ALL_COLORS : MagicColor.fromName(produced);
+
+        if ("ChosenX".equals(sa.getParam("Amount"))
+                && sa.getPayCosts() != null && sa.getPayCosts().hasSpecificCostType(CostRemoveCounter.class)) {
+            CounterType ctrType = CounterType.KI; // Petalmane Baku
+            for (CostPart part : sa.getPayCosts().getCostParts()) {
+                if (part instanceof CostRemoveCounter) {
+                    ctrType = ((CostRemoveCounter)part).counter;
+                    break;
+                }
+            }
+            manaReceived = host.getCounters(ctrType);
+        }
+
         int searchCMC = numManaSrcs - selfCost + manaReceived;
 
         if ("X".equals(sa.getParam("Produced"))) {

forge-ai/src/main/java/forge/ai/ability/MustBlockAi.java

@@ -1,6 +1,8 @@
 package forge.ai.ability;
 
 import com.google.common.base.Predicate;
+
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilCard;
 import forge.ai.ComputerUtilCombat;
 import forge.ai.SpellAbilityAi;
@@ -60,7 +62,7 @@ public class MustBlockAi extends SpellAbilityAi {
         boolean chance = false;
 
         if (abTgt != null) {
-            List<Card> list = CardLists.filter(ai.getOpponent().getCardsIn(ZoneType.Battlefield), CardPredicates.Presets.CREATURES);
+            List<Card> list = CardLists.filter(ComputerUtil.getOpponentFor(ai).getCardsIn(ZoneType.Battlefield), CardPredicates.Presets.CREATURES);
             list = CardLists.getTargetableCards(list, sa);
             list = CardLists.getValidCards(list, abTgt.getValidTgts(), source.getController(), source, sa);
             list = CardLists.filter(list, new Predicate<Card>() {

forge-ai/src/main/java/forge/ai/ability/PermanentAi.java

@@ -62,6 +62,8 @@ public class PermanentAi extends SpellAbilityAi {
                 return false;
             }
         }
+
+        /* -- not used anymore after Ixalan (Planeswalkers are now legendary, not unique by subtype) --
         if (card.isPlaneswalker()) {
             CardCollection list = CardLists.filter(ai.getCardsIn(ZoneType.Battlefield),
                     CardPredicates.Presets.PLANEWALKERS);
@@ -75,7 +77,7 @@ public class PermanentAi extends SpellAbilityAi {
                 }
                 break;
             }
-        }
+        }*/
 
         if (card.getType().hasSupertype(Supertype.World)) {
             CardCollection list = CardLists.getType(ai.getCardsIn(ZoneType.Battlefield), "World");
@@ -175,22 +177,44 @@ public class PermanentAi extends SpellAbilityAi {
                     if (!hasCard) {
                         dontCast = true;
                     }
-                } else if (param.equals("MaxControlled")) {
+                } else if (param.startsWith("MaxControlled")) {
-                    // Only cast unless there are X or more cards like this on the battlefield under AI control already
+                    // Only cast unless there are X or more cards like this on the battlefield under AI control already,
-                    int numControlled = CardLists.filter(ai.getCardsIn(ZoneType.Battlefield), CardPredicates.nameEquals(card.getName())).size();
+                    CardCollection ctrld = CardLists.filter(ai.getCardsIn(ZoneType.Battlefield), CardPredicates.nameEquals(card.getName()));
+
+                    int numControlled = 0;
+                    if (param.endsWith("WithoutOppAuras")) {
+                        // Check that the permanet does not have any auras attached to it by the opponent (this assumes that if
+                        // the opponent cast an aura on the opposing permanent, it's not with good intentions, and thus it might
+                        // be better to have a pristine copy of the card - might not always be a correct assumption, but sounds
+                        // like a reasonable default for some cards).
+                        for (Card c : ctrld) {
+                            if (c.getEnchantedBy(false).isEmpty()) {
+                                numControlled++;
+                            } else {
+                                for (Card att : c.getEnchantedBy(false)) {
+                                    if (!att.getController().isOpponentOf(ai)) {
+                                        numControlled++;
+                                    }
+                                }
+                            }
+                        }
+                    } else {
+                        numControlled = ctrld.size();
+                    }
+
                     if (numControlled >= Integer.parseInt(value)) {
                         dontCast = true;
                     }
                 } else if (param.equals("NumManaSources")) {
                     // Only cast if there are X or more mana sources controlled by the AI
-                    CardCollection m = ComputerUtilMana.getAvailableMana(ai, true);
+                    CardCollection m = ComputerUtilMana.getAvailableManaSources(ai, true);
                     if (m.size() < Integer.parseInt(value)) {
                         dontCast = true;
                     }
                 } else if (param.equals("NumManaSourcesNextTurn")) {
                     // Only cast if there are X or more mana sources controlled by the AI *or*
                     // if there are X-1 mana sources in play but the AI has an extra land in hand
-                    CardCollection m = ComputerUtilMana.getAvailableMana(ai, true);
+                    CardCollection m = ComputerUtilMana.getAvailableManaSources(ai, true);
                     int extraMana = CardLists.filter(ai.getCardsIn(ZoneType.Hand), CardPredicates.Presets.LANDS).size() > 0 ? 1 : 0;
                     if (card.getName().equals("Illusions of Grandeur")) {
                         // TODO: this is currently hardcoded for specific Illusions-Donate cost reduction spells, need to make this generic.

forge-ai/src/main/java/forge/ai/ability/PlayAi.java

@@ -99,7 +99,8 @@ public class PlayAi extends SpellAbilityAi {
      * @see forge.card.ability.SpellAbilityAi#chooseSingleCard(forge.game.player.Player, forge.card.spellability.SpellAbility, java.util.List, boolean)
      */
     @Override
-    public Card chooseSingleCard(final Player ai, final SpellAbility sa, Iterable<Card> options, boolean isOptional,
+    public Card chooseSingleCard(final Player ai, final SpellAbility sa, Iterable<Card> options,
+            final boolean isOptional,
             Player targetedPlayer) {
         List<Card> tgtCards = CardLists.filter(options, new Predicate<Card>() {
             @Override

forge-ai/src/main/java/forge/ai/ability/PowerExchangeAi.java

@@ -2,6 +2,7 @@ package forge.ai.ability;
 
 import com.google.common.base.Predicate;
 
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilCard;
 import forge.ai.SpellAbilityAi;
 import forge.game.ability.AbilityUtils;
@@ -31,7 +32,7 @@ public class PowerExchangeAi extends SpellAbilityAi {
         sa.resetTargets();
 
         List<Card> list =
-                CardLists.getValidCards(ai.getOpponent().getCardsIn(ZoneType.Battlefield), tgt.getValidTgts(), ai, sa.getHostCard(), sa);
+                CardLists.getValidCards(ComputerUtil.getOpponentFor(ai).getCardsIn(ZoneType.Battlefield), tgt.getValidTgts(), ai, sa.getHostCard(), sa);
         // AI won't try to grab cards that are filtered out of AI decks on
         // purpose
         list = CardLists.filter(list, new Predicate<Card>() {

forge-ai/src/main/java/forge/ai/ability/ProtectAi.java

@@ -147,9 +147,10 @@ public class ProtectAi extends SpellAbilityAi {
                     if (s==null) {
                         return false;
                     } else {
+                    	Player opponent = ComputerUtil.getOpponentFor(ai);
                         Combat combat = ai.getGame().getCombat();
-                        int dmg = ComputerUtilCombat.damageIfUnblocked(c, ai.getOpponent(), combat, true);
+                        int dmg = ComputerUtilCombat.damageIfUnblocked(c, opponent, combat, true);
-                        float ratio = 1.0f * dmg / ai.getOpponent().getLife();
+                        float ratio = 1.0f * dmg / opponent.getLife();
                         Random r = MyRandom.getRandom();
                         return r.nextFloat() < ratio;
                     }

forge-ai/src/main/java/forge/ai/ability/ProtectAllAi.java

@@ -29,7 +29,7 @@ public class ProtectAllAi extends SpellAbilityAi {
             return false;
         }
 
-        if (!ComputerUtilCost.checkSacrificeCost(ai, cost, hostCard)) {
+        if (!ComputerUtilCost.checkSacrificeCost(ai, cost, hostCard, sa)) {
             return false;
         }
 

forge-ai/src/main/java/forge/ai/ability/PumpAi.java

@@ -1,31 +1,18 @@
 package forge.ai.ability;
 
-import java.util.Arrays;
-import java.util.List;
-
-import org.apache.commons.lang3.StringUtils;
-
 import com.google.common.base.Predicate;
+import com.google.common.base.Predicates;
 import com.google.common.collect.Lists;
-
+import forge.ai.*;
-import forge.ai.ComputerUtil;
-import forge.ai.ComputerUtilAbility;
-import forge.ai.ComputerUtilCard;
-import forge.ai.ComputerUtilMana;
-import forge.ai.SpecialCardAi;
-import forge.ai.SpellAbilityAi;
 import forge.game.Game;
 import forge.game.ability.AbilityUtils;
 import forge.game.ability.ApiType;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
-import forge.game.card.CardLists;
-import forge.game.card.CardPredicates;
 import forge.game.card.CardPredicates.Presets;
-import forge.game.card.CardUtil;
+import forge.game.combat.Combat;
-import forge.game.card.CounterType;
 import forge.game.cost.Cost;
 import forge.game.cost.CostPart;
+import forge.game.cost.CostRemoveCounter;
 import forge.game.cost.CostTapType;
 import forge.game.phase.PhaseHandler;
 import forge.game.phase.PhaseType;
@@ -35,6 +22,11 @@ import forge.game.spellability.SpellAbility;
 import forge.game.spellability.SpellAbilityRestriction;
 import forge.game.spellability.TargetRestrictions;
 import forge.game.zone.ZoneType;
+import forge.util.Aggregates;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.Arrays;
+import java.util.List;
 
 public class PumpAi extends PumpAiBase {
 
@@ -82,16 +74,17 @@ public class PumpAi extends PumpAiBase {
                 System.err.println("MoveCounter AiLogic without MoveCounter SubAbility!");
                 return false;
             }
-
+        } else if ("Aristocrat".equals(aiLogic)) {
-
+            return doAristocratLogic(sa, ai);
         }
+
         return super.checkAiLogic(ai, sa, aiLogic);
     }
 
     @Override
     protected boolean checkPhaseRestrictions(final Player ai, final SpellAbility sa, final PhaseHandler ph,
             final String logic) {
-        // special Phase check for MoveCounter
+        // special Phase check for various AI logics
         if (logic.equals("MoveCounter")) {
             if (ph.inCombat() && ph.getPlayerTurn().isOpponentOf(ai)) {
                 return true;
@@ -101,6 +94,11 @@ public class PumpAi extends PumpAiBase {
                 return false;
             }
             return true;
+        } else if (logic.equals("Aristocrat")) {
+            final boolean isThreatened = ComputerUtil.predictThreatenedObjects(ai, null, true).contains(sa.getHostCard());
+            if (!ph.is(PhaseType.COMBAT_DECLARE_BLOCKERS) && !isThreatened) {
+                return false;
+            }
         }
         return super.checkPhaseRestrictions(ai, sa, ph);
     }
@@ -112,7 +110,7 @@ public class PumpAi extends PumpAiBase {
             if (ph.getPhase().isBefore(PhaseType.COMBAT_DECLARE_ATTACKERS) && ph.isPlayerTurn(ai)) {
                 return false;
             }
-            if (ph.getPhase().isBefore(PhaseType.COMBAT_DECLARE_BLOCKERS) && ph.getPlayerTurn().isOpponentOf(ai)) {
+            if (ph.getPhase().isBefore(PhaseType.COMBAT_BEGIN) && ph.getPlayerTurn().isOpponentOf(ai)) {
                 return false;
             }
         }
@@ -141,7 +139,9 @@ public class PumpAi extends PumpAiBase {
         final boolean isFight = "Fight".equals(aiLogic) || "PowerDmg".equals(aiLogic);
         final boolean isBerserk = "Berserk".equals(aiLogic);
 
-        if ("MoveCounter".equals(aiLogic)) {
+        if ("Pummeler".equals(aiLogic)) {
+            return SpecialCardAi.ElectrostaticPummeler.consider(ai, sa);
+        } else if ("MoveCounter".equals(aiLogic)) {
             final SpellAbility moveSA = sa.findSubAbilityByType(ApiType.MoveCounter);
 
             if (moveSA == null) {
@@ -359,9 +359,12 @@ public class PumpAi extends PumpAiBase {
 
                     return true;
                 }
-                if (!card.getController().isOpponentOf(ai) 
+                if (!card.getController().isOpponentOf(ai)) {
-                        && ComputerUtilCard.shouldPumpCard(ai, sa, card, defense, attack, keywords, false)) {
+                    if (ComputerUtilCard.shouldPumpCard(ai, sa, card, defense, attack, keywords, false)) {
-                    return true;
+                        return true;
+                    } else if (containsUsefulKeyword(ai, keywords, card, sa, attack)) {
+                        return true;
+                    }
                 }
             }
             return false;
@@ -371,6 +374,21 @@ public class PumpAi extends PumpAiBase {
             return false;
         }
 
+        if ("DebuffForXCounters".equals(sa.getParam("AILogic")) && sa.getTargetCard() != null) {
+            // e.g. Skullmane Baku
+            CounterType ctrType = CounterType.KI;
+            for (CostPart part : sa.getPayCosts().getCostParts()) {
+                if (part instanceof CostRemoveCounter) {
+                    ctrType = ((CostRemoveCounter)part).counter;
+                    break;
+                }
+            }
+
+            // Do not pay more counters than necessary to kill the targeted creature
+            int chosenX = Math.min(source.getCounters(ctrType), sa.getTargetCard().getNetToughness());
+            sa.setSVar("ChosenX", String.valueOf(chosenX));
+        }
+
         return true;
     } // pumpPlayAI()
 
@@ -461,6 +479,22 @@ public class PumpAi extends PumpAiBase {
             }
         }
 
+        // Detain target nonland permanent: don't target noncreature permanents that don't have
+        // any activated abilities.
+        if ("DetainNonLand".equals(sa.getParam("AILogic"))) {
+            list = CardLists.filter(list, Predicates.or(CardPredicates.Presets.CREATURES, new Predicate<Card>() {
+                @Override
+                public boolean apply(Card card) {
+                    for (SpellAbility sa: card.getSpellAbilities()) {
+                        if (sa.isAbility()) {
+                            return true;
+                        }
+                    }
+                    return false;
+                }
+            }));
+        }
+
         if (list.isEmpty()) {
             if (ComputerUtil.activateForCost(sa, ai)) {
                 return pumpMandatoryTarget(ai, sa);
@@ -695,8 +729,6 @@ public class PumpAi extends PumpAiBase {
         return true;
     } // pumpDrawbackAI()
 
-
-
     @Override
     public boolean confirmAction(Player player, SpellAbility sa, PlayerActionConfirmMode mode, String message) {
         //TODO Add logic here if necessary but I think the AI won't cast
@@ -704,4 +736,123 @@ public class PumpAi extends PumpAiBase {
         //and the pump isn't mandatory
         return true;
     }
+
+    public boolean doAristocratLogic(final SpellAbility sa, final Player ai) {
+        // A logic for cards that say "Sacrifice a creature: CARDNAME gets +X/+X until EOT"
+        final Game game = ai.getGame();
+        final Combat combat = game.getCombat();
+        final Card source = sa.getHostCard();
+        final int numOtherCreats = Math.max(0, ai.getCreaturesInPlay().size() - 1);
+        final int powerBonus = sa.hasParam("NumAtt") ? AbilityUtils.calculateAmount(source, sa.getParam("NumAtt"), sa) : 0;
+        final int toughnessBonus = sa.hasParam("NumDef") ? AbilityUtils.calculateAmount(source, sa.getParam("NumDef"), sa) : 0;
+        final int selfEval = ComputerUtilCard.evaluateCreature(source);
+        final boolean isThreatened = ComputerUtil.predictThreatenedObjects(ai, null, true).contains(source);
+
+        if (numOtherCreats == 0) {
+            return false;
+        }
+
+        // Try to save the card from death by pumping it if it's threatened with a damage spell
+        if (isThreatened && toughnessBonus > 0) {
+            SpellAbility saTop = game.getStack().peekAbility();
+
+            if (saTop.getApi() == ApiType.DealDamage || saTop.getApi() == ApiType.DamageAll) {
+                int dmg = AbilityUtils.calculateAmount(saTop.getHostCard(), saTop.getParam("NumDmg"), saTop) + source.getDamage();
+                final int numCreatsToSac = Math.max(1, (int)Math.ceil((dmg - source.getNetToughness() + 1) / toughnessBonus));
+
+                if (numCreatsToSac > 1) { // probably not worth sacrificing too much
+                    return false;
+                }
+
+                if (source.getNetToughness() <= dmg && source.getNetToughness() + toughnessBonus * numCreatsToSac > dmg) {
+                    final CardCollection sacFodder = CardLists.filter(ai.getCreaturesInPlay(),
+                            new Predicate<Card>() {
+                                @Override
+                                public boolean apply(Card card) {
+                                    return ComputerUtilCard.isUselessCreature(ai, card)
+                                            || card.hasSVar("SacMe")
+                                            || ComputerUtilCard.evaluateCreature(card) < selfEval; // Maybe around 150 is OK?
+                                }
+                            }
+                    );
+                    if (sacFodder.size() >= numCreatsToSac) {
+                        return true;
+                    }
+                }
+            }
+
+            return false;
+        }
+
+        if (combat == null) {
+            return false;
+        }
+
+        if (combat.isAttacking(source)) {
+            if (combat.getBlockers(source).isEmpty()) {
+                // Unblocked. Check if able to deal lethal, then sac'ing everything is fair game if
+                // the opponent is tapped out or if we're willing to risk it (will currently risk it
+                // in case it sacs less than half its creatures to deal lethal damage)
+
+                // TODO: also teach the AI to account for Trample, but that's trickier (needs to account fully
+                // for potential damage prevention, various effects like reducing damage to 0, etc.)
+
+                final Player defPlayer = combat.getDefendingPlayerRelatedTo(source);
+                final boolean defTappedOut = ComputerUtilMana.getAvailableManaEstimate(defPlayer) == 0;
+
+                final boolean isInfect = source.hasKeyword("Infect"); // Flesh-Eater Imp
+                int lethalDmg = isInfect ? 10 - defPlayer.getPoisonCounters() : defPlayer.getLife();
+
+                if (isInfect && !combat.getDefenderByAttacker(source).canReceiveCounters(CounterType.POISON)) {
+                    lethalDmg = Integer.MAX_VALUE; // won't be able to deal poison damage to kill the opponent
+                }
+
+                final int numCreatsToSac = (lethalDmg - source.getNetCombatDamage()) / powerBonus;
+
+                if (defTappedOut || numCreatsToSac < numOtherCreats / 2) {
+                    return source.getNetCombatDamage() < lethalDmg
+                            && source.getNetCombatDamage() + numOtherCreats * powerBonus >= lethalDmg;
+                } else {
+                    return false;
+                }
+            } else {
+                // We have already attacked. Thus, see if we have a creature to sac that is worse to lose
+                // than the card we attacked with.
+                final CardCollection sacTgts = CardLists.filter(ai.getCreaturesInPlay(),
+                        new Predicate<Card>() {
+                            @Override
+                            public boolean apply(Card card) {
+                                return ComputerUtilCard.isUselessCreature(ai, card)
+                                        || ComputerUtilCard.evaluateCreature(card) < selfEval;
+                            }
+                        }
+                );
+
+                if (sacTgts.isEmpty()) {
+                    return false;
+                }
+
+                final int minDefT = Aggregates.min(combat.getBlockers(source), CardPredicates.Accessors.fnGetNetToughness);
+                final int DefP = Aggregates.sum(combat.getBlockers(source), CardPredicates.Accessors.fnGetNetPower);
+
+                // Make sure we don't over-sacrifice, only sac until we can survive and kill a creature
+                return source.getNetToughness() - source.getDamage() <= DefP || source.getNetCombatDamage() < minDefT;
+            }
+        } else {
+            // We can't deal lethal, check if there's any sac fodder than can be used for other circumstances
+            final CardCollection sacFodder = CardLists.filter(ai.getCreaturesInPlay(),
+                    new Predicate<Card>() {
+                        @Override
+                        public boolean apply(Card card) {
+                            return ComputerUtilCard.isUselessCreature(ai, card)
+                                    || card.hasSVar("SacMe")
+                                    || ComputerUtilCard.evaluateCreature(card) < selfEval; // Maybe around 150 is OK?
+                        }
+                    }
+            );
+
+            return !sacFodder.isEmpty();
+        }
+    }
+
 }

forge-ai/src/main/java/forge/ai/ability/PumpAiBase.java

@@ -181,7 +181,7 @@ public abstract class PumpAiBase extends SpellAbilityAi {
         final Game game = ai.getGame();
         final Combat combat = game.getCombat();
         final PhaseHandler ph = game.getPhaseHandler();
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
         final int newPower = card.getNetCombatDamage() + attack;
         //int defense = getNumDefense(sa);
         if (!CardUtil.isStackingKeyword(keyword) && card.hasKeyword(keyword)) {
@@ -207,6 +207,19 @@ public abstract class PumpAiBase extends SpellAbilityAi {
                 return true;
             }
             Predicate<Card> flyingOrReach = Predicates.or(CardPredicates.hasKeyword("Flying"), CardPredicates.hasKeyword("Reach"));
+            if (ph.isPlayerTurn(opp) && combat != null
+                    && Iterables.any(combat.getAttackers(), CardPredicates.hasKeyword("Flying"))
+                    && CombatUtil.canBlock(card)) {
+                // Use defensively to destroy the opposing Flying creature when possible, or to block with an indestructible
+                // creature buffed with Flying
+                for (Card c : CardLists.filter(combat.getAttackers(), CardPredicates.hasKeyword("Flying"))) {
+                    if (!ComputerUtilCombat.attackerCantBeDestroyedInCombat(c.getController(), c)
+                            && (card.getNetPower() >= c.getNetToughness() && card.getNetToughness() > c.getNetPower()
+                            || ComputerUtilCombat.attackerCantBeDestroyedInCombat(ai, card))) {
+                        return true;
+                    }
+                }
+            }
             if (ph.isPlayerTurn(opp) || !(CombatUtil.canAttack(card, opp) || (combat != null && combat.isAttacking(card)))
                     || ph.getPhase().isAfter(PhaseType.COMBAT_DECLARE_ATTACKERS)
                     || newPower <= 0
@@ -371,7 +384,7 @@ public abstract class PumpAiBase extends SpellAbilityAi {
                     || !CombatUtil.canBlock(card)) {
                 return false;
             }
-        } else if (keyword.endsWith("CARDNAME can block an additional creature.")) {
+        } else if (keyword.endsWith("CARDNAME can block an additional creature each combat.")) {
             if (ph.isPlayerTurn(ai)
                     || !ph.getPhase().equals(PhaseType.COMBAT_DECLARE_ATTACKERS)) {
                 return false;

forge-ai/src/main/java/forge/ai/ability/PumpAllAi.java

@@ -48,7 +48,7 @@ public class PumpAllAi extends PumpAiBase {
         }
 
         if (abCost != null && source.hasSVar("AIPreference")) {
-            if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source, true)) {
+            if (!ComputerUtilCost.checkSacrificeCost(ai, abCost, source, sa, true)) {
                 return false;
             }
         }
@@ -57,7 +57,7 @@ public class PumpAllAi extends PumpAiBase {
             valid = sa.getParam("ValidCards");
         }
 
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
         CardCollection comp = CardLists.getValidCards(ai.getCardsIn(ZoneType.Battlefield), valid, source.getController(), source);
         CardCollection human = CardLists.getValidCards(opp.getCardsIn(ZoneType.Battlefield), valid, source.getController(), source);
 

forge-ai/src/main/java/forge/ai/ability/RearrangeTopOfLibraryAi.java

@@ -1,6 +1,7 @@
 package forge.ai.ability;
 
 
+import forge.ai.ComputerUtil;
 import forge.ai.SpellAbilityAi;
 import forge.game.player.Player;
 import forge.game.spellability.SpellAbility;
@@ -27,7 +28,7 @@ public class RearrangeTopOfLibraryAi extends SpellAbilityAi {
             // ability is targeted
             sa.resetTargets();
 
-            Player opp = ai.getOpponent();
+            Player opp = ComputerUtil.getOpponentFor(ai);
             final boolean canTgtHuman = opp.canBeTargetedBy(sa);
 
             if (!canTgtHuman) {

forge-ai/src/main/java/forge/ai/ability/RepeatAi.java

@@ -2,6 +2,7 @@ package forge.ai.ability;
 
 
 import forge.ai.AiController;
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilMana;
 import forge.ai.PlayerControllerAi;
 import forge.ai.SpellAbilityAi;
@@ -17,7 +18,7 @@ public class RepeatAi extends SpellAbilityAi {
     protected boolean canPlayAI(Player ai, SpellAbility sa) {
     	final Card source = sa.getHostCard();
         final TargetRestrictions tgt = sa.getTargetRestrictions();
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
 
         if (tgt != null) {
             if (!opp.canBeTargetedBy(sa)) {
@@ -48,7 +49,7 @@ public class RepeatAi extends SpellAbilityAi {
     protected boolean doTriggerAINoCost(Player ai, SpellAbility sa, boolean mandatory) {
     	
     	 if (sa.usesTargeting()) {
-         	final Player opp = ai.getOpponent();
+         	final Player opp = ComputerUtil.getOpponentFor(ai);
              if (sa.canTarget(opp)) {
                  sa.resetTargets();
                  sa.getTargets().add(opp);

forge-ai/src/main/java/forge/ai/ability/RepeatEachAi.java

@@ -15,6 +15,7 @@ import forge.game.player.Player;
 import forge.game.spellability.AbilitySub;
 import forge.game.spellability.SpellAbility;
 import forge.game.zone.ZoneType;
+import forge.util.TextUtil;
 
 
 public class RepeatEachAi extends SpellAbilityAi {
@@ -85,7 +86,7 @@ public class RepeatEachAi extends SpellAbilityAi {
 
             String svar = repeat.getSVar(repeat.getParam("LifeAmount"));
             // replace RememberedPlayerCtrl with YouCtrl
-            String svarYou = svar.replace("RememberedPlayer", "You");
+            String svarYou = TextUtil.fastReplace(svar, "RememberedPlayer", "You");
 
             // Currently all Cards with that are affect all player, including AI
             if (aiPlayer.canLoseLife()) {

forge-ai/src/main/java/forge/ai/ability/RollPlanarDiceAi.java

@@ -11,6 +11,7 @@ import forge.game.player.Player;
 import forge.game.spellability.SpellAbility;
 import forge.game.zone.ZoneType;
 import forge.util.MyRandom;
+import forge.util.TextUtil;
 
 public class RollPlanarDiceAi extends SpellAbilityAi {
     /* (non-Javadoc)
@@ -107,7 +108,7 @@ public class RollPlanarDiceAi extends SpellAbilityAi {
                         }
                         break;
                     default:
-                        System.out.println(String.format("Unexpected AI hint parameter in card %s in RollPlanarDiceAi: %s.", plane.getName(), paramName));
+                        System.out.println(TextUtil.concatNoSpace("Unexpected AI hint parameter in card ", plane.getName(), " in RollPlanarDiceAi: ", paramName, "."));
                         break;
                 }
             }

forge-ai/src/main/java/forge/ai/ability/SacrificeAi.java

@@ -1,5 +1,6 @@
 package forge.ai.ability;
 
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilCard;
 import forge.ai.ComputerUtilMana;
 import forge.ai.SpellAbilityAi;
@@ -59,7 +60,7 @@ public class SacrificeAi extends SpellAbilityAi {
         final TargetRestrictions tgt = sa.getTargetRestrictions();
         final boolean destroy = sa.hasParam("Destroy");
 
-        Player opp = ai.getOpponent();
+        Player opp = ComputerUtil.getOpponentFor(ai);
         if (tgt != null) {
             sa.resetTargets();
             if (!opp.canBeTargetedBy(sa)) {
@@ -72,7 +73,7 @@ public class SacrificeAi extends SpellAbilityAi {
             final int amount = AbilityUtils.calculateAmount(sa.getHostCard(), num, sa);
 
             List<Card> list =
-                    CardLists.getValidCards(ai.getOpponent().getCardsIn(ZoneType.Battlefield), valid.split(","), sa.getActivatingPlayer(), sa.getHostCard(), sa);
+                    CardLists.getValidCards(opp.getCardsIn(ZoneType.Battlefield), valid.split(","), sa.getActivatingPlayer(), sa.getHostCard(), sa);
             for (Card c : list) {
                 if (c.hasSVar("SacMe") && Integer.parseInt(c.getSVar("SacMe")) > 3) {
                 	return false;

forge-ai/src/main/java/forge/ai/ability/SacrificeAllAi.java

@@ -1,5 +1,6 @@
 package forge.ai.ability;
 
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilCard;
 import forge.ai.ComputerUtilCost;
 import forge.ai.ComputerUtilMana;
@@ -12,6 +13,7 @@ import forge.game.player.Player;
 import forge.game.spellability.SpellAbility;
 import forge.game.zone.ZoneType;
 import forge.util.MyRandom;
+import forge.util.TextUtil;
 
 import java.util.Random;
 
@@ -34,11 +36,11 @@ public class SacrificeAllAi extends SpellAbilityAi {
             // Set PayX here to maximum value.
             final int xPay = ComputerUtilMana.determineLeftoverMana(sa, ai);
             source.setSVar("PayX", Integer.toString(xPay));
-            valid = valid.replace("X", Integer.toString(xPay));
+            valid = TextUtil.fastReplace(valid, "X", Integer.toString(xPay));
         }
 
         CardCollection humanlist =
-                CardLists.getValidCards(ai.getOpponent().getCardsIn(ZoneType.Battlefield), valid.split(","), source.getController(), source, sa);
+                CardLists.getValidCards(ComputerUtil.getOpponentFor(ai).getCardsIn(ZoneType.Battlefield), valid.split(","), source.getController(), source, sa);
         CardCollection computerlist =
                 CardLists.getValidCards(ai.getCardsIn(ZoneType.Battlefield), valid.split(","), source.getController(), source, sa);
 

forge-ai/src/main/java/forge/ai/ability/ScryAi.java

@@ -1,14 +1,11 @@
 package forge.ai.ability;
 
+import com.google.common.base.Predicates;
 import forge.ai.SpellAbilityAi;
-import forge.game.card.Card;
+import forge.game.card.*;
 import forge.game.card.Card.SplitCMCMode;
 import forge.game.phase.PhaseHandler;
 import forge.game.phase.PhaseType;
-import forge.game.card.CardCollection;
-import forge.game.card.CardLists;
-import forge.game.card.CardPredicates;
-import forge.game.card.CounterType;
 import forge.game.player.Player;
 import forge.game.player.PlayerActionConfirmMode;
 import forge.game.spellability.SpellAbility;
@@ -18,8 +15,6 @@ import forge.util.MyRandom;
 
 import java.util.Random;
 
-import com.google.common.base.Predicates;
-
 public class ScryAi extends SpellAbilityAi {
 
     /* (non-Javadoc)
@@ -49,6 +44,18 @@ public class ScryAi extends SpellAbilityAi {
      */
     @Override
     protected boolean checkPhaseRestrictions(final Player ai, final SpellAbility sa, final PhaseHandler ph) {
+        // if the Scry ability requires tapping and has a mana cost, it's best done at the end of opponent's turn
+        // and right before the beginning of AI's turn, if possible, to avoid mana locking the AI and also to
+        // try to scry right before drawing a card. Also, avoid tapping creatures in the AI's turn, if possible,
+        // even if there's no mana cost.
+        if (sa.getPayCosts() != null) {
+            if (sa.getPayCosts().hasTapCost()
+                    && (sa.getPayCosts().hasManaCost() || (sa.getHostCard() != null && sa.getHostCard().isCreature()))
+                    && !SpellAbilityAi.isSorcerySpeed(sa)) {
+                return ph.getNextTurn() == ai && ph.is(PhaseType.END_OF_TURN);
+            }
+        }
+
         // in the playerturn Scry should only be done in Main1 or in upkeep if able
         if (ph.isPlayerTurn(ai)) {
             if (SpellAbilityAi.isSorcerySpeed(sa)) {

forge-ai/src/main/java/forge/ai/ability/SetStateAi.java

@@ -1,23 +1,19 @@
 package forge.ai.ability;
 
 import com.google.common.base.Predicate;
-
 import forge.ai.ComputerUtilCard;
 import forge.ai.SpellAbilityAi;
 import forge.card.CardSplitType;
+import forge.card.CardStateName;
 import forge.game.Game;
 import forge.game.GlobalRuleChange;
 import forge.game.ability.AbilityUtils;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
-import forge.game.card.CardLists;
-import forge.game.card.CardState;
-import forge.game.card.CardUtil;
-import forge.game.card.CounterType;
 import forge.game.card.CardPredicates.Presets;
 import forge.game.phase.PhaseHandler;
 import forge.game.phase.PhaseType;
 import forge.game.player.Player;
+import forge.game.player.PlayerActionConfirmMode;
 import forge.game.spellability.SpellAbility;
 import forge.game.spellability.TargetRestrictions;
 import forge.game.zone.ZoneType;
@@ -67,6 +63,13 @@ public class SetStateAi extends SpellAbilityAi {
         return false;
     }
 
+    @Override
+    protected boolean checkAiLogic(final Player aiPlayer, final SpellAbility sa, final String aiLogic) {
+        final Card source = sa.getHostCard();
+
+        return super.checkAiLogic(aiPlayer, sa, aiLogic);
+    }
+
     @Override
     public boolean chkAIDrawback(SpellAbility sa, Player aiPlayer) {
         // Gross generalization, but this always considers alternate
@@ -78,6 +81,7 @@ public class SetStateAi extends SpellAbilityAi {
     protected boolean checkPhaseRestrictions(Player ai, SpellAbility sa, PhaseHandler ph) {
         final String mode = sa.getParam("Mode");
         final Card source = sa.getHostCard();
+        final String logic = sa.getParamOrDefault("AILogic", "");
         final Game game = source.getGame();
 
         if("Transform".equals(mode)) {
@@ -86,7 +90,7 @@ public class SetStateAi extends SpellAbilityAi {
                 if (source.hasKeyword("CARDNAME can't transform")) {
                     return false;
                 }
-                return shouldTransformCard(source, ai, ph);
+                return shouldTransformCard(source, ai, ph) || "Always".equals(logic);
             } else {
                 final TargetRestrictions tgt = sa.getTargetRestrictions();
                 sa.resetTargets();
@@ -108,7 +112,7 @@ public class SetStateAi extends SpellAbilityAi {
                 }
 
                 for (final Card c : list) {
-                    if (shouldTransformCard(c, ai, ph)) {
+                    if (shouldTransformCard(c, ai, ph) || "Always".equals(logic)) {
                         sa.getTargets().add(c);
                         if (sa.getTargets().getNumTargeted() == tgt.getMaxTargets(source, sa)) {
                             break;
@@ -126,7 +130,7 @@ public class SetStateAi extends SpellAbilityAi {
                 if (list.isEmpty()) {
                     return false;
                 }
-                return shouldTurnFace(list.get(0), ai, ph);
+                return shouldTurnFace(list.get(0), ai, ph) || "Always".equals(logic);
             } else {
                 final TargetRestrictions tgt = sa.getTargetRestrictions();
                 sa.resetTargets();
@@ -139,7 +143,7 @@ public class SetStateAi extends SpellAbilityAi {
                 }
 
                 for (final Card c : list) {
-                    if (shouldTurnFace(c, ai, ph)) {
+                    if (shouldTurnFace(c, ai, ph) || "Always".equals(logic)) {
                         sa.getTargets().add(c);
                         if (sa.getTargets().getNumTargeted() == tgt.getMaxTargets(source, sa)) {
                             break;
@@ -166,12 +170,26 @@ public class SetStateAi extends SpellAbilityAi {
         transformed.getCurrentState().copyFrom(card, card.getAlternateState());
         transformed.updateStateForView();
 
+        // TODO: compareCards assumes that a creature will transform into a creature. Need to improve this
+        // for other things potentially transforming.
         return compareCards(card, transformed, ai, ph);
 
     }
 
     private boolean shouldTurnFace(Card card, Player ai, PhaseHandler ph) {
         if (card.isFaceDown()) {
+            // hidden agenda
+            if (card.getState(CardStateName.Original).hasIntrinsicKeyword("Hidden agenda")
+                    && card.getZone().is(ZoneType.Command)) {
+                String chosenName = card.getNamedCard();
+                for (Card cast : ai.getGame().getStack().getSpellsCastThisTurn()) {
+                    if (cast.getController() == ai && cast.getName().equals(chosenName)) {
+                        return true;
+                    }
+                }
+                return false;
+            }
+
             // non-permanent facedown can't be turned face up
             if (!card.getRules().getType().isPermanent()) {
                 return false;
@@ -241,4 +259,9 @@ public class SetStateAi extends SpellAbilityAi {
         // but for more cleaner way use Evaluate for check
         return valueCard <= valueTransformed;
     }
+
+    public boolean confirmAction(Player player, SpellAbility sa, PlayerActionConfirmMode mode, String message) {
+        // TODO: improve the AI for when it may want to transform something that's optional to transform
+        return true;
+    }
 }

forge-ai/src/main/java/forge/ai/ability/TapAi.java

@@ -5,7 +5,10 @@ import forge.ai.ComputerUtilCost;
 import forge.ai.SpellAbilityAi;
 import forge.game.ability.AbilityUtils;
 import forge.game.card.Card;
+import forge.game.card.CounterType;
 import forge.game.cost.Cost;
+import forge.game.cost.CostPart;
+import forge.game.cost.CostRemoveCounter;
 import forge.game.phase.PhaseHandler;
 import forge.game.phase.PhaseType;
 import forge.game.player.Player;
@@ -58,6 +61,20 @@ public class TapAi extends TapAiBase {
                 return false;
             }
         } else {
+            if ("TapForXCounters".equals(sa.getParam("AILogic"))) {
+                // e.g. Waxmane Baku
+                CounterType ctrType = CounterType.KI;
+                for (CostPart part : sa.getPayCosts().getCostParts()) {
+                    if (part instanceof CostRemoveCounter) {
+                        ctrType = ((CostRemoveCounter)part).counter;
+                        break;
+                    }
+                }
+
+                int numTargetable = Math.min(sa.getHostCard().getCounters(ctrType), ai.getOpponents().getCreaturesInPlay().size());
+                sa.setSVar("ChosenX", String.valueOf(numTargetable));
+            }
+
             sa.resetTargets();
             if (!tapPrefTargeting(ai, source, tgt, sa, false)) {
                 return false;

forge-ai/src/main/java/forge/ai/ability/TapAiBase.java

@@ -111,7 +111,7 @@ public abstract class TapAiBase extends SpellAbilityAi  {
      * @return a boolean.
      */
     protected boolean tapPrefTargeting(final Player ai, final Card source, final TargetRestrictions tgt, final SpellAbility sa, final boolean mandatory) {
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
         final Game game = ai.getGame();
         CardCollection tapList = CardLists.filterControlledBy(game.getCardsIn(ZoneType.Battlefield), ai.getOpponents());
         tapList = CardLists.getValidCards(tapList, tgt.getValidTgts(), source.getController(), source, sa);

forge-ai/src/main/java/forge/ai/ability/TapAllAi.java

@@ -3,6 +3,7 @@ package forge.ai.ability;
 import com.google.common.base.Predicate;
 import com.google.common.collect.Iterables;
 
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilCombat;
 import forge.ai.SpellAbilityAi;
 import forge.game.Game;
@@ -30,7 +31,7 @@ public class TapAllAi extends SpellAbilityAi {
         // or during upkeep/begin combat?
 
         final Card source = sa.getHostCard();
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
         final Game game = ai.getGame();
 
         if (game.getPhaseHandler().getPhase().isAfter(PhaseType.COMBAT_BEGIN)) {
@@ -126,8 +127,8 @@ public class TapAllAi extends SpellAbilityAi {
 
         if (tgt != null) {
             sa.resetTargets();
-            sa.getTargets().add(ai.getOpponent());
+            sa.getTargets().add(ComputerUtil.getOpponentFor(ai));
-            validTappables = ai.getOpponent().getCardsIn(ZoneType.Battlefield);
+            validTappables = ComputerUtil.getOpponentFor(ai).getCardsIn(ZoneType.Battlefield);
         }
 
         if (mandatory) {

forge-ai/src/main/java/forge/ai/ability/TokenAi.java

@@ -1,27 +1,14 @@
 package forge.ai.ability;
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-
 import com.google.common.base.Predicate;
 import com.google.common.collect.Iterables;
-
+import forge.ai.*;
-import forge.ai.ComputerUtil;
-import forge.ai.ComputerUtilCard;
-import forge.ai.ComputerUtilMana;
-import forge.ai.SpellAbilityAi;
-import forge.ai.SpellApiToAi;
 import forge.game.Game;
 import forge.game.GameEntity;
 import forge.game.ability.AbilityFactory;
 import forge.game.ability.AbilityUtils;
 import forge.game.ability.ApiType;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
-import forge.game.card.CardFactory;
-import forge.game.card.CardLists;
-import forge.game.card.CardPredicates;
 import forge.game.combat.Combat;
 import forge.game.cost.CostPart;
 import forge.game.cost.CostPutCounter;
@@ -38,6 +25,11 @@ import forge.game.trigger.TriggerHandler;
 import forge.game.zone.ZoneType;
 import forge.item.PaperToken;
 import forge.util.MyRandom;
+import forge.util.TextUtil;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
 
 /**
  * <p>
@@ -179,7 +171,7 @@ public class TokenAi extends SpellAbilityAi {
          */
         final Card source = sa.getHostCard();
         final Game game = ai.getGame();
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
 
         if (ComputerUtil.preventRunAwayActivations(sa)) {
             return false;   // prevent infinite tokens?
@@ -233,7 +225,29 @@ public class TokenAi extends SpellAbilityAi {
                 }
             }
         }
-        return MyRandom.getRandom().nextFloat() < .8;
+
+        double chance = 1.0F; // 100%
+        boolean alwaysFromPW = true;
+        boolean alwaysOnOppAttack = true;
+
+        if (ai.getController().isAI()) {
+            AiController aic = ((PlayerControllerAi) ai.getController()).getAi();
+            chance = (double)aic.getIntProperty(AiProps.TOKEN_GENERATION_ABILITY_CHANCE) / 100;
+            alwaysFromPW = aic.getBooleanProperty(AiProps.TOKEN_GENERATION_ALWAYS_IF_FROM_PLANESWALKER);
+            alwaysOnOppAttack = aic.getBooleanProperty(AiProps.TOKEN_GENERATION_ALWAYS_IF_OPP_ATTACKS);
+        }
+
+        if (sa.getRestrictions() != null && sa.getRestrictions().isPwAbility() && alwaysFromPW) {
+            return true;
+        } else if (ai.getGame().getPhaseHandler().is(PhaseType.COMBAT_DECLARE_ATTACKERS)
+                && ai.getGame().getPhaseHandler().getPlayerTurn().isOpponentOf(ai)
+                && ai.getGame().getCombat() != null
+                && !ai.getGame().getCombat().getAttackers().isEmpty()
+                && alwaysOnOppAttack) {
+            return true;
+        }
+
+        return MyRandom.getRandom().nextFloat() <= chance;
     }
 
     /**
@@ -254,13 +268,13 @@ public class TokenAi extends SpellAbilityAi {
         num = (num == null) ? "1" : num;
         final int nToSac = AbilityUtils.calculateAmount(topStack.getHostCard(), num, topStack);
         CardCollection list = CardLists.getValidCards(ai.getCardsIn(ZoneType.Battlefield), valid.split(","),
-                ai.getOpponent(), topStack.getHostCard(), sa);
+        		ComputerUtil.getOpponentFor(ai), topStack.getHostCard(), sa);
         list = CardLists.filter(list, CardPredicates.canBeSacrificedBy(topStack));
         // only care about saving single creature for now
         if (!list.isEmpty() && nTokens > 0 && list.size() == nToSac) {
             ComputerUtilCard.sortByEvaluateCreature(list);
             list.add(token);
-            list = CardLists.getValidCards(list, valid.split(","), ai.getOpponent(), topStack.getHostCard(), sa);
+            list = CardLists.getValidCards(list, valid.split(","), ComputerUtil.getOpponentFor(ai), topStack.getHostCard(), sa);
             list = CardLists.filter(list, CardPredicates.canBeSacrificedBy(topStack));
             if (ComputerUtilCard.evaluateCreature(token) < ComputerUtilCard.evaluateCreature(list.get(0))
                     && list.contains(token)) {
@@ -278,7 +292,7 @@ public class TokenAi extends SpellAbilityAi {
         if (tgt != null) {
             sa.resetTargets();
             if (tgt.canOnlyTgtOpponent()) {
-                sa.getTargets().add(ai.getOpponent());
+                sa.getTargets().add(ComputerUtil.getOpponentFor(ai));
             } else {
                 sa.getTargets().add(ai);
             }
@@ -414,7 +428,7 @@ public class TokenAi extends SpellAbilityAi {
         
         final List<String> imageNames = new ArrayList<String>(1);
         if (tokenImage.equals("")) {
-            imageNames.add(PaperToken.makeTokenFileName(colorDesc.replace(" ", ""), tokenPower, tokenToughness, tokenName));
+            imageNames.add(PaperToken.makeTokenFileName(TextUtil.fastReplace(colorDesc, " ", ""), tokenPower, tokenToughness, tokenName));
         } else {
             imageNames.add(0, tokenImage);
         }

forge-ai/src/main/java/forge/ai/ability/TwoPilesAi.java

@@ -2,6 +2,7 @@ package forge.ai.ability;
 
 import java.util.List;
 
+import forge.ai.ComputerUtil;
 import forge.ai.SpellAbilityAi;
 import forge.game.ability.AbilityUtils;
 import forge.game.card.Card;
@@ -28,7 +29,7 @@ public class TwoPilesAi extends SpellAbilityAi {
             valid = sa.getParam("ValidCards");
         }
 
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
 
         final TargetRestrictions tgt = sa.getTargetRestrictions();
         if (tgt != null) {

forge-ai/src/main/java/forge/ai/ability/UnattachAllAi.java

@@ -1,5 +1,6 @@
 package forge.ai.ability;
 
+import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilCard;
 import forge.ai.ComputerUtilMana;
 import forge.ai.SpellAbilityAi;
@@ -66,7 +67,7 @@ public class UnattachAllAi extends SpellAbilityAi {
     @Override
     protected boolean doTriggerAINoCost(Player ai, SpellAbility sa, boolean mandatory) {
         final Card card = sa.getHostCard();
-        final Player opp = ai.getOpponent();
+        final Player opp = ComputerUtil.getOpponentFor(ai);
         // Check if there are any valid targets
         List<GameObject> targets = new ArrayList<GameObject>();
         final TargetRestrictions tgt = sa.getTargetRestrictions();

forge-ai/src/main/java/forge/ai/ability/UntapAi.java

@@ -1,7 +1,5 @@
 package forge.ai.ability;
 
-import java.util.List;
-
 import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilCard;
 import forge.ai.ComputerUtilCost;
@@ -13,6 +11,7 @@ import forge.game.card.CardCollection;
 import forge.game.card.CardLists;
 import forge.game.card.CardPredicates.Presets;
 import forge.game.cost.Cost;
+import forge.game.cost.CostTap;
 import forge.game.phase.PhaseType;
 import forge.game.player.Player;
 import forge.game.player.PlayerCollection;
@@ -20,6 +19,8 @@ import forge.game.spellability.SpellAbility;
 import forge.game.spellability.TargetRestrictions;
 import forge.game.zone.ZoneType;
 
+import java.util.List;
+
 public class UntapAi extends SpellAbilityAi {
     @Override
     protected boolean checkAiLogic(final Player ai, final SpellAbility sa, final String aiLogic) {
@@ -132,7 +133,7 @@ public class UntapAi extends SpellAbilityAi {
         Player targetController = ai;
 
         if (sa.isCurse()) {
-            targetController = ai.getOpponent();
+            targetController = ComputerUtil.getOpponentFor(ai);
         }
 
         CardCollection list = CardLists.getTargetableCards(targetController.getCardsIn(ZoneType.Battlefield), sa);
@@ -148,6 +149,24 @@ public class UntapAi extends SpellAbilityAi {
         final String[] tappablePermanents = {"Creature", "Land", "Artifact"};
         untapList = CardLists.getValidCards(untapList, tappablePermanents, source.getController(), source, sa);
 
+        // Try to avoid potential infinite recursion,
+        // e.g. Kiora's Follower untapping another Kiora's Follower and repeating infinitely
+        if (sa.getPayCosts() != null && sa.getPayCosts().hasOnlySpecificCostType(CostTap.class)) {
+            CardCollection toRemove = new CardCollection();
+            for (Card c : untapList) {
+                for (SpellAbility ab : c.getAllSpellAbilities()) {
+                    if (ab.getApi() == ApiType.Untap
+                            && ab.getPayCosts() != null
+                            && ab.getPayCosts().hasOnlySpecificCostType(CostTap.class)
+                            && ab.canTarget(source)) {
+                        toRemove.add(c);
+                        break;
+                    }
+                }
+            }
+            untapList.removeAll(toRemove);
+        }
+
         sa.resetTargets();
         while (sa.getTargets().getNumTargeted() < tgt.getMaxTargets(sa.getHostCard(), sa)) {
             Card choice = null;

forge-ai/src/main/java/forge/ai/simulation/GameCopier.java

@@ -303,7 +303,7 @@ public class GameCopier {
             newCard.setSemiPermanentToughnessBoost(c.getSemiPermanentToughnessBoost());
             newCard.setDamage(c.getDamage());
             
-            newCard.setChangedCardTypes(c.getChangedCardTypes());
+            newCard.setChangedCardTypes(c.getChangedCardTypesMap());
             newCard.setChangedCardKeywords(c.getChangedCardKeywords());
             // TODO: Is this correct? Does it not duplicate keywords from enchantments and such?
             for (String kw : c.getHiddenExtrinsicKeywords())

forge-ai/src/main/java/forge/ai/simulation/GameSimulator.java

@@ -17,6 +17,7 @@ import forge.game.player.Player;
 import forge.game.spellability.SpellAbility;
 import forge.game.spellability.TargetChoices;
 import forge.game.spellability.TargetRestrictions;
+import forge.util.TextUtil;
 
 public class GameSimulator {
     public static boolean COPY_STACK = false;
@@ -136,7 +137,7 @@ public class GameSimulator {
             System.err.println(sa.getDescription() + "->" + desc);
         }
         // FIXME: This is a hack that makes testManifest pass - figure out why it's needed.
-        desc = desc.replace("Unmanifest {0}", "Unmanifest no cost");
+        desc = TextUtil.fastReplace(desc, "Unmanifest {0}", "Unmanifest no cost");
         for (SpellAbility cSa : hostCard.getSpellAbilities()) {
             if (desc.equals(cSa.getDescription())) {
                 return cSa;
@@ -204,7 +205,7 @@ public class GameSimulator {
         }
 
         // TODO: Support multiple opponents.
-        Player opponent = aiPlayer.getOpponent();
+        Player opponent = ComputerUtil.getOpponentFor(aiPlayer);
         resolveStack(simGame, opponent);
 
         // TODO: If this is during combat, before blockers are declared,

forge-ai/src/main/java/forge/ai/simulation/GameStateEvaluator.java

@@ -4,7 +4,6 @@ import forge.ai.CreatureEvaluator;
 import forge.game.Game;
 import forge.game.card.Card;
 import forge.game.card.CounterType;
-import forge.game.combat.Combat;
 import forge.game.phase.PhaseType;
 import forge.game.player.Player;
 import forge.game.zone.ZoneType;

forge-ai/src/main/java/forge/ai/simulation/SpellAbilityPicker.java

@@ -1,22 +1,16 @@
 package forge.ai.simulation;
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-
 import forge.ai.AiPlayDecision;
 import forge.ai.ComputerUtil;
 import forge.ai.ComputerUtilAbility;
 import forge.ai.ComputerUtilCost;
 import forge.ai.ability.ChangeZoneAi;
+import forge.ai.ability.ExploreAi;
 import forge.ai.simulation.GameStateEvaluator.Score;
 import forge.game.Game;
+import forge.game.ability.ApiType;
 import forge.game.ability.effects.CharmEffect;
-import forge.game.card.Card;
+import forge.game.card.*;
-import forge.game.card.CardCollection;
-import forge.game.card.CardCollectionView;
-import forge.game.card.CardLists;
-import forge.game.card.CardPredicates;
 import forge.game.cost.Cost;
 import forge.game.phase.PhaseType;
 import forge.game.player.Player;
@@ -25,6 +19,11 @@ import forge.game.spellability.AbilitySub;
 import forge.game.spellability.SpellAbility;
 import forge.game.spellability.SpellAbilityCondition;
 import forge.game.zone.ZoneType;
+import forge.util.TextUtil;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
 
 public class SpellAbilityPicker {
     private Game game;
@@ -285,7 +284,7 @@ public class SpellAbilityPicker {
             saString = sa.toString();
             String cardName = sa.getHostCard().getName();
             if (!cardName.isEmpty()) {
-                saString = saString.replace(cardName, "<$>");
+                saString = TextUtil.fastReplace(saString, cardName, "<$>");
             }
             if (saString.length() > 40) {
                 saString = saString.substring(0, 40) + "...";
@@ -431,7 +430,11 @@ public class SpellAbilityPicker {
                 return card;
             }
         }
-        return ChangeZoneAi.chooseCardToHiddenOriginChangeZone(destination, origin, sa, fetchList, player2, decider);
+        if (sa.getApi() == ApiType.Explore) {
+            return ExploreAi.shouldPutInGraveyard(fetchList, decider);
+        } else {
+            return ChangeZoneAi.chooseCardToHiddenOriginChangeZone(destination, origin, sa, fetchList, player2, decider);
+        }
     }
 
     public CardCollectionView chooseSacrificeType(String type, SpellAbility ability, int amount) {

forge-core/pom.xml

@@ -6,7 +6,7 @@
     <parent>
         <artifactId>forge</artifactId>
         <groupId>forge</groupId>
-        <version>1.6.1</version>
+        <version>1.6.4</version>
     </parent>
 
     <artifactId>forge-core</artifactId>

forge-core/src/main/java/forge/ImageKeys.java

@@ -3,6 +3,7 @@ package forge;
 import forge.item.*;
 import forge.util.FileUtil;
 import forge.util.ImageUtil;
+import forge.util.TextUtil;
 import org.apache.commons.lang3.StringUtils;
 
 import java.io.File;
@@ -104,17 +105,17 @@ public final class ImageKeys {
         // AE -> Ae and Ae -> AE for older cards with different file names 
         // on case-sensitive file systems
         if (filename.contains("Ae")) {
-            file = findFile(dir, filename.replace("Ae", "AE"));
+            file = findFile(dir, TextUtil.fastReplace(filename, "Ae", "AE"));
             if (file != null) { return file; }
         } else if (filename.contains("AE")) {
-            file = findFile(dir, filename.replace("AE", "Ae"));
+            file = findFile(dir, TextUtil.fastReplace(filename, "AE", "Ae"));
             if (file != null) { return file; }
         }
 
         // some S00 cards are really part of 6ED
         String s2kAlias = getSetFolder("S00");
         if (filename.startsWith(s2kAlias)) {
-            file = findFile(dir, filename.replace(s2kAlias, getSetFolder("6ED")));
+            file = findFile(dir, TextUtil.fastReplace(filename, s2kAlias, getSetFolder("6ED")));
             if (file != null) { return file; }
         }
 

forge-core/src/main/java/forge/card/CardDb.java

@@ -637,9 +637,9 @@ public final class CardDb implements ICardDatabase, IDeckGenPool {
         }
 
         if (cardRarity == CardRarity.Unknown) {
-            System.err.println(String.format("An unknown card found when loading Forge decks: \"%s\" Forge does not know of such a card's existence. Have you mistyped the card name?", cardName));
+            System.err.println(TextUtil.concatWithSpace("An unknown card found when loading Forge decks:", TextUtil.enclosedDoubleQuote(cardName), "Forge does not know of such a card's existence. Have you mistyped the card name?"));
         } else {
-            System.err.println(String.format("An unsupported card was requested: \"%s\" from \"%s\" set. We're sorry, but you cannot use this card yet.", request.cardName, cardEdition.getName()));
+            System.err.println(TextUtil.concatWithSpace("An unsupported card was requested:", TextUtil.enclosedDoubleQuote(request.cardName), "from", TextUtil.enclosedDoubleQuote(cardEdition.getName()), "set. We're sorry, but you cannot use this card yet."));
         }
 
         return new PaperCard(CardRules.getUnsupportedCardNamed(request.cardName), cardEdition.getCode(), cardRarity, 1);

forge-core/src/main/java/forge/card/CardEdition.java

@@ -27,11 +27,7 @@ import forge.card.CardDb.SetPreference;
 import forge.deck.CardPool;
 import forge.item.PaperCard;
 import forge.item.SealedProduct;
-import forge.util.Aggregates;
+import forge.util.*;
-import forge.util.FileSection;
-import forge.util.FileUtil;
-import forge.util.IItemReader;
-import forge.util.MyRandom;
 import forge.util.storage.StorageBase;
 import forge.util.storage.StorageReaderBase;
 import forge.util.storage.StorageReaderFolder;
@@ -307,7 +303,7 @@ public final class CardEdition implements Comparable<CardEdition> { // immutable
                     enumType = Type.valueOf(type.toUpperCase(Locale.ENGLISH));
                 } catch (IllegalArgumentException ignored) {
                     // ignore; type will get UNKNOWN
-                    System.err.println(String.format("Ignoring unknown type in set definitions: name: %s; type: %s", res.name, type));
+                    System.err.println(TextUtil.concatWithSpace("Ignoring unknown type in set definitions: name:", TextUtil.addSuffix(res.name, ";"), "type:", type));
                 }
             }
             res.type = enumType;
@@ -393,7 +389,7 @@ public final class CardEdition implements Comparable<CardEdition> { // immutable
         public CardEdition getEditionByCodeOrThrow(final String code) {
             final CardEdition set = this.get(code);
             if (null == set) {
-                throw new RuntimeException(String.format("Edition with code '%s' not found", code));
+                throw new RuntimeException(TextUtil.concatWithSpace("Edition with code", TextUtil.enclosedSingleQuote(code), "not found"));
             }
             return set;
         }

forge-core/src/main/java/forge/card/CardFace.java

@@ -1,6 +1,7 @@
 package forge.card;
 
 import forge.card.mana.ManaCost;
+import forge.util.TextUtil;
 import org.apache.commons.lang3.StringUtils;
 
 import java.util.*;
@@ -89,7 +90,7 @@ final class CardFace implements ICardFace {
     void setPtText(String value) {
         final int slashPos = value.indexOf('/');
         if (slashPos == -1) {
-            throw new RuntimeException(String.format("Creature '%s' has bad p/t stats", this.getName()));
+            throw new RuntimeException(TextUtil.concatWithSpace("Creature", TextUtil.enclosedSingleQuote(this.getName()),"has bad p/t stats"));
         }
         boolean negPower = value.charAt(0) == '-';
         boolean negToughness = value.charAt(slashPos + 1) == '-';

forge-core/src/main/java/forge/card/CardRules.java

@@ -17,13 +17,14 @@
  */
 package forge.card;
 
-import java.util.StringTokenizer;
+import com.google.common.collect.Iterables;
-
-import org.apache.commons.lang3.StringUtils;
-
 import forge.card.mana.IParserManaCost;
 import forge.card.mana.ManaCost;
 import forge.card.mana.ManaCostShard;
+import forge.util.TextUtil;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.StringTokenizer;
 
 /**
  * A collection of methods containing full
@@ -198,6 +199,10 @@ public final class CardRules implements ICardCharacteristics {
         return mainPart.getOracleText().contains("can be your commander");
     }
 
+    public boolean canBePartnerCommander() {
+        return canBeCommander() && Iterables.contains(mainPart.getKeywords(), "Partner");
+    }
+
     public String getMeldWith() {
         return meldWith;
     }
@@ -217,10 +222,10 @@ public final class CardRules implements ICardCharacteristics {
     public void setVanguardProperties(String pt) {
         final int slashPos = pt == null ? -1 : pt.indexOf('/');
         if (slashPos == -1) {
-            throw new RuntimeException(String.format("Vanguard '%s' has bad hand/life stats", this.getName()));
+            throw new RuntimeException(TextUtil.concatWithSpace("Vanguard", TextUtil.enclosedSingleQuote(this.getName()), "has bad hand/life stats"));
         }
-        this.deltaHand = Integer.parseInt(pt.substring(0, slashPos).replace("+", ""));
+        this.deltaHand = Integer.parseInt(TextUtil.fastReplace(pt.substring(0, slashPos), "+", ""));
-        this.deltaLife = Integer.parseInt(pt.substring(slashPos+1).replace("+", ""));
+        this.deltaLife = Integer.parseInt(TextUtil.fastReplace(pt.substring(slashPos+1), "+", ""));
     }
 
     // Downloadable image