MagicDiscardEvent cannot discard the source

src/magic/model/choice/MagicCardChoice.java

@@ -67,6 +67,7 @@ public class MagicCardChoice extends MagicChoice {
 
         final List<Object> options = new ArrayList<Object>();
         final MagicCardList hand = new MagicCardList(player.getHand());
+        hand.remove(source);
         Collections.sort(hand);
         final int actualAmount = Math.min(amount,hand.size());
         if (actualAmount > 0) {
@@ -86,6 +87,7 @@ public class MagicCardChoice extends MagicChoice {
 
         final MagicCardChoiceResult result=new MagicCardChoiceResult();
         final Set<Object> validCards=new HashSet<Object>(player.getHand());
+        validCards.remove(source);
         int actualAmount=Math.min(amount,validCards.size());
         for (;actualAmount>0;actualAmount--) {
             final String message=result.size()>0?result.toString()+"|"+MESSAGE:MESSAGE;

src/magic/model/choice/MagicRandomCardChoice.java

@@ -22,6 +22,7 @@ public class MagicRandomCardChoice extends MagicChoice {
     private MagicCardChoiceResult discard(final MagicPlayer player, final MagicSource source) {
         final MagicCardChoiceResult result=new MagicCardChoiceResult();
         final MagicCardList hand=new MagicCardList(player.getHand());
+        hand.remove(source);
         hand.shuffle();
         final int actualAmount=Math.min(hand.size(),amount);
         for (int i = 0; i < actualAmount; i++) {

src/magic/model/event/MagicDiscardEvent.java

@@ -55,8 +55,10 @@ public class MagicDiscardEvent extends MagicEvent {
             EVENT_ACTION,
             "PN " + genDescription(player,amount)
         );
+        //check if source is in player's hand
+        final int minHandSize = player.getHand().contains(source) ? amount + 1 : amount;
         conds = new MagicCondition[]{
-            MagicConditionFactory.HandAtLeast(amount)
+            MagicConditionFactory.HandAtLeast(minHandSize)
         };
     }