- Added a possibility to couple sacrifice costs with other costs (currently by sacrificing, pun semi-intended, the input-based sacrifice interface and replacing it with a menu-based selection one).

- Added 4 cards by swordshine (Leviathan, Exalted Dragon, Reclamation, Flooded Woodlands).

.gitattributes

@@ -3158,6 +3158,7 @@ res/cardsfolder/e/evolution_charm.txt svneol=native#text/plain
 res/cardsfolder/e/evolution_vat.txt svneol=native#text/plain
 res/cardsfolder/e/evolving_wilds.txt svneol=native#text/plain
 res/cardsfolder/e/exalted_angel.txt svneol=native#text/plain
+res/cardsfolder/e/exalted_dragon.txt -text
 res/cardsfolder/e/excavation.txt svneol=native#text/plain
 res/cardsfolder/e/excise.txt svneol=native#text/plain
 res/cardsfolder/e/exclude.txt svneol=native#text/plain
@@ -3536,6 +3537,7 @@ res/cardsfolder/f/floodchaser.txt svneol=native#text/plain
 res/cardsfolder/f/flooded_grove.txt svneol=native#text/plain
 res/cardsfolder/f/flooded_shoreline.txt svneol=native#text/plain
 res/cardsfolder/f/flooded_strand.txt svneol=native#text/plain
+res/cardsfolder/f/flooded_woodlands.txt -text
 res/cardsfolder/f/floodgate.txt -text
 res/cardsfolder/f/floodwater_dam.txt svneol=native#text/plain
 res/cardsfolder/f/floral_spuzzem.txt svneol=native#text/plain
@@ -5634,6 +5636,7 @@ res/cardsfolder/l/lesser_gargadon.txt svneol=native#text/plain
 res/cardsfolder/l/lesser_werewolf.txt -text svneol=unset#text/plain
 res/cardsfolder/l/lethargy_trap.txt svneol=native#text/plain
 res/cardsfolder/l/leveler.txt svneol=native#text/plain
+res/cardsfolder/l/leviathan.txt -text
 res/cardsfolder/l/levitation.txt svneol=native#text/plain
 res/cardsfolder/l/ley_druid.txt svneol=native#text/plain
 res/cardsfolder/l/leyline_of_anticipation.txt svneol=native#text/plain
@@ -7900,6 +7903,7 @@ res/cardsfolder/r/reckless_spite.txt svneol=native#text/plain
 res/cardsfolder/r/reckless_waif_merciless_predator.txt -text
 res/cardsfolder/r/reckless_wurm.txt svneol=native#text/plain
 res/cardsfolder/r/reclaim.txt svneol=native#text/plain
+res/cardsfolder/r/reclamation.txt -text
 res/cardsfolder/r/reclusive_wight.txt svneol=native#text/plain
 res/cardsfolder/r/recoil.txt svneol=native#text/plain
 res/cardsfolder/r/recollect.txt svneol=native#text/plain

res/cardsfolder/e/exalted_dragon.txt

@@ -0,0 +1,12 @@
+Name:Exalted Dragon
+ManaCost:4 W W
+Types:Creature Dragon
+Text:no text
+PT:5/5
+K:Flying
+S:Mode$ CantAttackUnless | ValidCard$ Creature.Self | Target$ Player,Planeswalker | Cost$ Sac<1/Land> | Description$ CARDNAME can't attack unless you sacrifice a land.
+SVar:Rarity:Rare
+SVar:Picture:http://www.wizards.com/global/images/magic/general/exalted_dragon.jpg
+SetInfo:EXO|Rare|http://magiccards.info/scans/en/ex/5.jpg
+Oracle:Flying\nExalted Dragon can't attack unless you sacrifice a land.
+End

res/cardsfolder/f/flooded_woodlands.txt

@@ -0,0 +1,10 @@
+Name:Flooded Woodlands
+ManaCost:2 U B
+Types:Enchantment
+Text:no text
+S:Mode$ CantAttackUnless | ValidCard$ Creature.Green | Target$ Player,Planeswalker | Cost$ Sac<1/Land> | Description$ Green creatures can't attack unless their controller sacrifices a land for each green creature he or she controls that's attacking.
+SVar:Rarity:Rare
+SVar:Picture:http://www.wizards.com/global/images/magic/general/flooded_woodlands.jpg
+SetInfo:ICE|Rare|http://magiccards.info/scans/en/ia/368.jpg
+Oracle:Green creatures can't attack unless their controller sacrifices a land for each green creature he or she controls that's attacking.
+End

res/cardsfolder/l/leviathan.txt

@@ -0,0 +1,20 @@
+Name:Leviathan
+ManaCost:5 U U U U
+Types:Creature Leviathan
+Text:no text
+PT:10/10
+K:Trample
+K:CARDNAME enters the battlefield tapped.
+K:CARDNAME doesn't untap during your untap step.
+T:Mode$ Phase | Phase$ Upkeep | ValidPlayer$ You | OptionalDecider$ You | Execute$ TrigUntap | TriggerZones$ Battlefield | TriggerDescription$ At the beginning of your upkeep, you may sacrifice two Islands. If you do, untap CARDNAME.
+SVar:TrigUntap:AB$ Untap | Cost$ Sac<2/Island>
+S:Mode$ CantAttackUnless | ValidCard$ Creature.Self | Target$ Player,Planeswalker | Cost$ Sac<2/Island> | Description$ CARDNAME can't attack unless you sacrifice two islands.
+SVar:NeedsToPlayVar:Y GE4
+SVar:Y:Count$Valid Island.YouCtrl
+SVar:Rarity:Rare
+SVar:Picture:http://www.wizards.com/global/images/magic/general/leviathan.jpg
+SetInfo:5ED|Rare|http://magiccards.info/scans/en/5e/97.jpg
+SetInfo:4ED|Rare|http://magiccards.info/scans/en/4e/79.jpg
+SetInfo:DRK|Rare|http://magiccards.info/scans/en/dk/28.jpg
+Oracle:Trample\nLeviathan enters the battlefield tapped and doesn't untap during your untap step.\nAt the beginning of your upkeep, you may sacrifice two Islands. If you do, untap Leviathan.\nLeviathan can't attack unless you sacrifice two Islands.
+End

res/cardsfolder/r/reclamation.txt

@@ -0,0 +1,10 @@
+Name:Reclamation
+ManaCost:2 W G
+Types:Enchantment
+Text:no text
+S:Mode$ CantAttackUnless | ValidCard$ Creature.Black | Target$ Player,Planeswalker | Cost$ Sac<1/Land> | Description$ Black creatures can't attack unless their controller sacrifices a land for each black creature he or she controls that's attacking.
+SVar:Rarity:Rare
+SVar:Picture:http://www.wizards.com/global/images/magic/general/reclamation.jpg
+SetInfo:ICE|Rare|http://magiccards.info/scans/en/ia/377.jpg
+Oracle:Black creatures can't attack unless their controller sacrifices a land for each black creature he or she controls that's attacking.
+End

src/main/java/forge/GameActionUtil.java

@@ -380,6 +380,7 @@ public final class GameActionUtil {
         final ArrayList<CostPart> parts =  cost.getCostParts();
         ArrayList<CostPart> remainingParts =  new ArrayList<CostPart>(cost.getCostParts());
         CostPart costPart = null;
+        int num_parts = parts.size();
         if (!parts.isEmpty()) {
             costPart = parts.get(0);
         }
@@ -486,6 +487,42 @@ public final class GameActionUtil {
                     }
                 }
             }
+            else if (part instanceof CostSacrifice) {
+                
+                CostSacrifice sacCost = (CostSacrifice)part;
+                Player p = Singletons.getControl().getPlayer();
+                String valid = sacCost.getType();
+                int amount = Integer.parseInt(sacCost.getAmount());
+                List<Card> list = AbilityFactory.filterListByType(p.getCardsIn(ZoneType.Battlefield), valid, ability);
+
+                if (list.size() < amount) {
+                    // unable to pay (not enough cards)
+                    hasPaid = false;
+                    break;
+                }
+                
+                if (!showYesNoDialog(source, "Do you want to pay the sacrifice cost?")) {
+                    hasPaid = false;
+                    break;
+                }
+
+                for (int i = 0; i < amount; i++) {
+                    if (list.isEmpty()) {
+                        hasPaid = false;
+                        break;
+                    }
+                    Object o = GuiChoose.one("Select a card to sacrifice", list);
+                    if (o != null) {
+                        final Card c = (Card) o;
+
+                        Singletons.getModel().getGame().getAction().sacrifice(c, ability);
+
+                        list.remove(c);
+                    }
+                }
+
+                remainingParts.remove(part);
+            }
         }
         if (!hasPaid) {
             unpaid.execute();
@@ -501,13 +538,7 @@ public final class GameActionUtil {
         costPart = remainingParts.get(0);
 
         //the following costs need inputs and can't be combined at the moment
-        if (costPart instanceof CostSacrifice) {
+        if (costPart instanceof CostReturn) {
-            final boolean bResolving = Singletons.getModel().getGame().getStack().isResolving();
-            Singletons.getModel().getGame().getStack().setResolving(false);
-            Singletons.getModel().getMatch().getInput().setInput(new InputPaySacCost((CostSacrifice) costPart, ability, paid, unpaid));
-            Singletons.getModel().getGame().getStack().setResolving(bResolving);
-        }
-        else if (costPart instanceof CostReturn) {
             final boolean bResolving = Singletons.getModel().getGame().getStack().isResolving();
             Singletons.getModel().getGame().getStack().setResolving(false);
             Singletons.getModel().getMatch().getInput().setInput(new InputPayReturnCost((CostReturn) costPart, ability, paid, unpaid));