- Added an AI cost preference for discard costs, the SVar is called "DiscardMe". Squee, Goblin Nabob is an example.

src/main/java/forge/ComputerUtil.java

@@ -867,6 +867,22 @@ public class ComputerUtil {
                 }
             }
         }
+        
+        if (pref.contains("DiscardCost")) { // search for permanents with DiscardMe
+            for (int ip = 0; ip < 9; ip++) {    // priority 0 is the lowest, priority 5 the highest
+                final int priority = 9 - ip;
+                CardList SacMeList = typeList.filter(new CardListFilter() {
+                    public boolean addCard(Card c) {
+                        return (!c.getSVar("DiscardMe").equals("") && Integer.parseInt(c.getSVar("DiscardMe")) == priority);
+                    }
+                });
+                if (SacMeList.size() != 0) {
+                    SacMeList.shuffle();
+                    return SacMeList.get(0);
+                }
+            }
+        }
+        
         return null;
     }
 

src/main/java/forge/card/cost/CostUtil.java

@@ -61,8 +61,15 @@ public class CostUtil {
     
     static public boolean checkDiscardCost(Cost cost, Card source){
         for(CostPart part : cost.getCostParts()){
-            if (part instanceof CostDiscard)
-                return false;
+            if (part instanceof CostDiscard) {
+                CostDiscard disc = (CostDiscard)part;
+                
+                String type = disc.getType();
+                CardList typeList = AllZoneUtil.getPlayerHand(AllZone.getComputerPlayer());
+                typeList = typeList.getValidCards(type.split(","), source.getController(), source);
+                if (ComputerUtil.getCardPreference(source, "DiscardCost", typeList) == null)
+                    return false;
+            }
         }
         return true;
     }