diff --git a/Mage.Sets/src/mage/cards/a/ArixmethesSlumberingIsle.java b/Mage.Sets/src/mage/cards/a/ArixmethesSlumberingIsle.java
index 3c6578b392..615f5d7e24 100644
--- a/Mage.Sets/src/mage/cards/a/ArixmethesSlumberingIsle.java
+++ b/Mage.Sets/src/mage/cards/a/ArixmethesSlumberingIsle.java
@@ -28,7 +28,6 @@ import mage.constants.SubType;
 import mage.constants.SuperType;
 import mage.constants.Zone;
 import mage.counters.CounterType;
-import mage.filter.FilterSpell;
 import mage.game.Game;
 import mage.game.permanent.Permanent;
 
@@ -38,8 +37,6 @@ import mage.game.permanent.Permanent;
  */
 public final class ArixmethesSlumberingIsle extends CardImpl {
 
-    private static final FilterSpell filter = new FilterSpell("a spell");
-
     public ArixmethesSlumberingIsle(UUID ownerId, CardSetInfo setInfo) {
         super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{2}{G}{U}");
 
diff --git a/Mage.Sets/src/mage/cards/p/PredatoryFocus.java b/Mage.Sets/src/mage/cards/p/PredatoryFocus.java
index 807f524959..46311e34e0 100644
--- a/Mage.Sets/src/mage/cards/p/PredatoryFocus.java
+++ b/Mage.Sets/src/mage/cards/p/PredatoryFocus.java
@@ -1,12 +1,8 @@
 package mage.cards.p;
 
 import java.util.UUID;
-
-import mage.MageObject;
 import mage.abilities.Ability;
-import mage.abilities.effects.AsThoughEffect;
 import mage.abilities.effects.AsThoughEffectImpl;
-import mage.cards.Card;
 import mage.cards.CardImpl;
 import mage.cards.CardSetInfo;
 import mage.constants.AsThoughEffectType;
@@ -24,7 +20,6 @@ public final class PredatoryFocus extends CardImpl {
 
     public PredatoryFocus(UUID ownerId, CardSetInfo setInfo) {
         super(ownerId, setInfo, new CardType[]{CardType.SORCERY}, "{3}{G}{G}");
-        
 
         // You may have creatures you control assign their combat damage this turn as though they weren't blocked.
         this.getSpellAbility().addEffect(new PredatoryFocusEffect());
@@ -58,10 +53,10 @@ class PredatoryFocusEffect extends AsThoughEffectImpl {
         super.init(source, game);
         Player controller = game.getPlayer(source.getControllerId());
         String sourceName = source.getSourceObject(game).getLogName();
-        choseUse = controller.chooseUse(Outcome.Damage, "Have creatures you control deal combat damage this turn" +
-                " as though they weren't blocked?", source, game);
-        game.informPlayers(choseUse ? controller.getName()+" chose to use "+sourceName+"'s effect" :
-                controller.getName()+" chose not to use "+sourceName+"'s effect.");
+        choseUse = controller.chooseUse(Outcome.Damage, "Have creatures you control deal combat damage this turn"
+                + " as though they weren't blocked?", source, game);
+        game.informPlayers(choseUse ? controller.getName() + " chose to use " + sourceName + "'s effect"
+                : controller.getName() + " chose not to use " + sourceName + "'s effect.");
     }
 
     @Override
@@ -78,4 +73,4 @@ class PredatoryFocusEffect extends AsThoughEffectImpl {
     public PredatoryFocusEffect copy() {
         return new PredatoryFocusEffect(this);
     }
-}
\ No newline at end of file
+}
diff --git a/Mage/src/main/java/mage/abilities/AbilityImpl.java b/Mage/src/main/java/mage/abilities/AbilityImpl.java
index 6047e07969..7404a42527 100644
--- a/Mage/src/main/java/mage/abilities/AbilityImpl.java
+++ b/Mage/src/main/java/mage/abilities/AbilityImpl.java
@@ -15,8 +15,8 @@ import mage.abilities.effects.ContinuousEffect;
 import mage.abilities.effects.Effect;
 import mage.abilities.effects.Effects;
 import mage.abilities.effects.OneShotEffect;
-import mage.abilities.effects.mana.DynamicManaEffect;
 import mage.abilities.effects.common.ManaEffect;
+import mage.abilities.effects.mana.DynamicManaEffect;
 import mage.abilities.mana.ActivatedManaAbilityImpl;
 import mage.cards.Card;
 import mage.cards.SplitCard;
@@ -116,7 +116,7 @@ public abstract class AbilityImpl implements Ability {
         this.costModificationActive = ability.costModificationActive;
         this.worksFaceDown = ability.worksFaceDown;
         this.abilityWord = ability.abilityWord;
-        this.sourceObject = ability.sourceObject;
+        this.sourceObject = null; // you may not copy this because otherwise simulation may modify real game object
         this.sourceObjectZoneChangeCounter = ability.sourceObjectZoneChangeCounter;
         this.canFizzle = ability.canFizzle;
         this.targetAdjuster = ability.targetAdjuster;
diff --git a/Mage/src/main/java/mage/abilities/effects/common/counter/RemoveCounterSourceEffect.java b/Mage/src/main/java/mage/abilities/effects/common/counter/RemoveCounterSourceEffect.java
index 4cd077f158..6345058e2f 100644
--- a/Mage/src/main/java/mage/abilities/effects/common/counter/RemoveCounterSourceEffect.java
+++ b/Mage/src/main/java/mage/abilities/effects/common/counter/RemoveCounterSourceEffect.java
@@ -1,4 +1,3 @@
-
 package mage.abilities.effects.common.counter;
 
 import mage.abilities.Ability;