improve handling for multiple defilers of same color

forge-game/src/main/java/forge/game/GameActionUtil.java

@@ -936,6 +936,7 @@ public final class GameActionUtil {
             ability.setHostCard(oldCard);
             ability.setXManaCostPaid(null);
             ability.setSpendPhyrexianMana(false);
+            ability.clearPipsToReduce();
             ability.setPaidLife(0);
             if (ability.hasParam("Announce")) {
                 for (final String aVar : ability.getParam("Announce").split(",")) {

forge-game/src/main/java/forge/game/cost/CostAdjustment.java

@@ -4,7 +4,6 @@ import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 
-import forge.game.spellability.OptionalCost;
 import org.apache.commons.lang3.StringUtils;
 
 import com.google.common.base.Strings;
@@ -209,20 +208,10 @@ public class CostAdjustment {
         // need to reduce generic extra because of 2 hybrid mana
         cost.decreaseGenericMana(sumGeneric);
 
-        if (sa.isSpell() && sa.isOptionalCostPaid(OptionalCost.ReduceW)) {
-            cost.decreaseShard(ManaCostShard.parseNonGeneric("W"), 1);
-        }
-        if (sa.isSpell() && sa.isOptionalCostPaid(OptionalCost.ReduceU)) {
-            cost.decreaseShard(ManaCostShard.parseNonGeneric("U"), 1);
-        }
-        if (sa.isSpell() && sa.isOptionalCostPaid(OptionalCost.ReduceB)) {
-            cost.decreaseShard(ManaCostShard.parseNonGeneric("B"), 1);
-        }
-        if (sa.isSpell() && sa.isOptionalCostPaid(OptionalCost.ReduceR)) {
-            cost.decreaseShard(ManaCostShard.parseNonGeneric("R"), 1);
-        }
-        if (sa.isSpell() && sa.isOptionalCostPaid(OptionalCost.ReduceG)) {
-            cost.decreaseShard(ManaCostShard.parseNonGeneric("G"), 1);
+        if (sa.isSpell() && !sa.getPipsToReduce().isEmpty()) {
+            for (String pip : sa.getPipsToReduce()) {
+                cost.decreaseShard(ManaCostShard.parseNonGeneric(pip), 1);
+            }
         }
 
         if (sa.isSpell() && sa.isOffering()) { // cost reduction from offerings

forge-game/src/main/java/forge/game/spellability/OptionalCost.java

@@ -5,25 +5,27 @@ package forge.game.spellability;
  *
  */
 public enum OptionalCost {
-    Buyback("Buyback"),
-    Entwine("Entwine"),
-    Kicker1("Kicker"),
-    Kicker2("Kicker"),
-    Retrace("Retrace"),
-    Jumpstart("Jump-start"),
-    ReduceW("(to reduce white mana)"),
-    ReduceU("(to reduce blue mana)"),
-    ReduceB("(to reduce black mana)"),
-    ReduceR("(to reduce red mana)"),
-    ReduceG("(to reduce green mana)"),
-    AltCost(""),
-    Flash("Flash"), // used for Pay Extra for Flash
-    Generic("Generic"); // used by "Dragon Presence" and pseudo-kicker cards
+    Buyback("Buyback", ""),
+    Entwine("Entwine", ""),
+    Kicker1("Kicker", ""),
+    Kicker2("Kicker", ""),
+    Retrace("Retrace", ""),
+    Jumpstart("Jump-start", ""),
+    ReduceW("(to reduce white mana)", "W"),
+    ReduceU("(to reduce blue mana)", "U"),
+    ReduceB("(to reduce black mana)", "B"),
+    ReduceR("(to reduce red mana)", "R"),
+    ReduceG("(to reduce green mana)", "G"),
+    AltCost("", ""),
+    Flash("Flash", ""), // used for Pay Extra for Flash
+    Generic("Generic", ""); // used by "Dragon Presence" and pseudo-kicker cards
 
     private String name;
+    private String pip;
     
-    OptionalCost(String name) {
+    OptionalCost(String name, String pip) {
         this.name = name;
+        this.pip = pip;
     }
 
     /**
@@ -32,4 +34,11 @@ public enum OptionalCost {
     public String getName() {
         return name;
     }
+
+    /**
+     * @return the pip
+     */
+    public String getPip() {
+        return pip;
+    }
 }

forge-game/src/main/java/forge/game/spellability/OptionalCostValue.java

@@ -51,12 +51,13 @@ public class OptionalCostValue implements Serializable {
     @Override
     public String toString() {
         StringBuilder sb = new StringBuilder();
-        if (type != OptionalCost.Generic && !type.getName().startsWith("(to reduce")) {
+        boolean isTag = type.getName().startsWith("(");
+        if (type != OptionalCost.Generic && !isTag) {
             sb.append(type.getName());
             sb.append(" ");
         }
         sb.append(cost.toSimpleString());
-        sb.append(type.getName().startsWith("(to reduce") ? " " + type.getName() : "");
+        sb.append(isTag ? " " + type.getName() : "");
         return sb.toString();
     }
 }

forge-game/src/main/java/forge/game/spellability/SpellAbility.java

@@ -17,13 +17,7 @@
  */
 package forge.game.spellability;
 
-import java.util.Arrays;
-import java.util.EnumMap;
-import java.util.EnumSet;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
+import java.util.*;
 
 import org.apache.commons.lang3.ObjectUtils;
 import org.apache.commons.lang3.StringUtils;
@@ -159,6 +153,8 @@ public abstract class SpellAbility extends CardTraitBase implements ISpellAbilit
 
     private EnumMap<AbilityKey, Object> replacingObjects = AbilityKey.newMap();
 
+    private final List<String> pipsToReduce = new ArrayList<>();
+
     private List<AbilitySub> chosenList = null;
     private CardCollection tappedForConvoke = new CardCollection();
     private Card sacrificedAsOffering;
@@ -716,6 +712,9 @@ public abstract class SpellAbility extends CardTraitBase implements ISpellAbilit
         // Thus, to protect the original's set from changes, we make a copy right here.
         optionalCosts = EnumSet.copyOf(optionalCosts);
         optionalCosts.add(cost);
+        if (!cost.getPip().equals("")) {
+            pipsToReduce.add(cost.getPip());
+        }
     }
 
     public boolean isBuyBackAbility() {
@@ -1484,6 +1483,13 @@ public abstract class SpellAbility extends CardTraitBase implements ISpellAbilit
         return isAlternativeCost(AlternativeCost.Spectacle);
     }
 
+    public List<String> getPipsToReduce() {
+        return pipsToReduce;
+    }
+    public final void clearPipsToReduce() {
+        pipsToReduce.clear();
+    }
+
     public CardCollection getTappedForConvoke() {
         return tappedForConvoke;
     }