- Added Koskun Falls

.gitattributes

@@ -5779,6 +5779,7 @@ res/cardsfolder/k/korlash_heir_to_blackblade.txt svneol=native#text/plain
 res/cardsfolder/k/kormus_bell.txt svneol=native#text/plain
 res/cardsfolder/k/korozda_guildmage.txt -text
 res/cardsfolder/k/korozda_monitor.txt -text
+res/cardsfolder/k/koskun_falls.txt -text
 res/cardsfolder/k/koskun_keep.txt svneol=native#text/plain
 res/cardsfolder/k/koth_of_the_hammer.txt svneol=native#text/plain
 res/cardsfolder/k/koths_courier.txt svneol=native#text/plain

res/cardsfolder/k/koskun_falls.txt

@@ -0,0 +1,11 @@
+Name:Koskun Falls
+ManaCost:2 B B
+Types:World Enchantment
+S:Mode$ CantAttackUnless | ValidCard$ Creature | Target$ You | Cost$ 2 | Description$ Creatures can't attack you unless their controller pays 2 for each creature he or she controls that's attacking you.
+T:Mode$ Phase | Phase$ Upkeep | ValidPlayer$ You | TriggerZones$ Battlefield | Execute$ TrigSac | TriggerDescription$ At the beginning of your upkeep, sacrifice CARDNAME unless you tap an untapped creature you control.
+SVar:TrigSac:AB$ Sacrifice | Cost$ 0 | Defined$ Self | UnlessCost$ tapXType<1/Creature> | UnlessPayer$ You
+SVar:NeedsToPlayVar:Y GE1
+SVar:Y:Count$Valid Creature.YouCtrl
+SVar:Picture:http://www.wizards.com/global/images/magic/general/koskun_fallss.jpg
+Oracle:At the beginning of your upkeep, sacrifice Koskun Falls unless you tap an untapped creature you control.\nCreatures can't attack you unless their controller pays {2} for each creature he or she controls that's attacking you.
+SetInfo:HML Rare

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

@@ -51,6 +51,7 @@ import forge.card.cost.CostPutCounter;
 import forge.card.cost.CostRemoveCounter;
 import forge.card.cost.CostReturn;
 import forge.card.cost.CostSacrifice;
+import forge.card.cost.CostTapType;
 import forge.card.cost.CostUtil;
 import forge.card.mana.ManaCost;
 import forge.card.spellability.Ability;
@@ -563,6 +564,31 @@ public final class GameActionUtil {
                 cpl.reportPaidCardsTo(sourceAbility);
             }
             
+            else if (part instanceof CostTapType) {
+                List<Card> choiceList = CardLists.getValidCards(p.getCardsIn(ZoneType.Battlefield), part.getType().split(";"), p, source);
+                choiceList = CardLists.filter(choiceList, Presets.UNTAPPED);
+                int amount = getAmountFromPartX(part, source, sourceAbility);
+                
+                if (choiceList.size() < amount) {
+                    // unable to pay (not enough cards)
+                    return false;
+                }
+
+                InputSelectCards inp = new InputSelectCardsFromList(amount, amount, choiceList);
+                inp.setMessage("Select %d card(s) to tap");
+                inp.setCancelAllowed(true);
+                
+                FThreads.setInputAndWait(inp);
+                if (inp.hasCancelled() || inp.getSelected().size() != amount)
+                    return false;
+
+                CostPartWithList cpl = (CostPartWithList)part;
+                for (Card c : inp.getSelected()) {
+                    cpl.executePayment(sourceAbility, c);
+                }
+                cpl.reportPaidCardsTo(sourceAbility);
+            }
+            
             else if (part instanceof CostPartMana ) {
                 if (!((CostPartMana) part).getManaToPay().equals("0")) // non-zero costs require input
                     mayRemovePart = false;