* Fixed that some mana effects did not send all neded events (prevented that Contamination chnaged conditonal mana from Cavern of Souls to black mana).

Mage/src/mage/abilities/effects/common/AddContinuousEffectToGame.java

@@ -59,7 +59,7 @@ public class AddContinuousEffectToGame extends OneShotEffect {
 
     @Override
     public boolean apply(Game game, Ability source) {
-        ContinuousEffect effectToAdd = (ContinuousEffect) effect.copy();
+        ContinuousEffect effectToAdd = effect.copy();
         game.addEffect(effectToAdd, source);
         return true;
     }