fixed Devouring Swarm condition

src/magic/card/Devouring_Swarm.java

@@ -6,11 +6,14 @@ import magic.model.MagicPermanent;
 import magic.model.MagicSource;
 import magic.model.action.MagicChangeTurnPTAction;
 import magic.model.choice.MagicTargetChoice;
+import magic.model.condition.MagicCondition;
 import magic.model.event.*;
 
 public class Devouring_Swarm {
 	public static final MagicPermanentActivation A = new MagicPermanentActivation(
-            null,
+			new MagicCondition[]{
+	                MagicCondition.ONE_CREATURE_CONDITION
+	            },
             new MagicActivationHints(MagicTiming.Pump),
             "Pump") {
 		@Override