diff --git a/src/main/java/forge/Card.java b/src/main/java/forge/Card.java
index b35b8b627b8..2233647a251 100644
--- a/src/main/java/forge/Card.java
+++ b/src/main/java/forge/Card.java
@@ -8236,7 +8236,7 @@ public class Card extends GameEntity implements Comparable<Card> {
 
     /** @return boolean */
     public boolean isInPlay() {
-        return this.getGame().getCardsIn(ZoneType.Battlefield).contains(this);
+        return this.isInZone(ZoneType.Battlefield);
     }
 
     public void onCleanupPhase(final Player turn) {
diff --git a/src/main/java/forge/CounterType.java b/src/main/java/forge/CounterType.java
index bedc09bc98f..93336b14b87 100644
--- a/src/main/java/forge/CounterType.java
+++ b/src/main/java/forge/CounterType.java
@@ -307,12 +307,4 @@ public enum CounterType {
         final String replacedName = name.replace("/", "").replaceAll("\\+", "p").replaceAll("\\-", "m").toUpperCase();
         return Enum.valueOf(CounterType.class, replacedName);
     }
-    
-    // although this should be in AI's code 
-    public boolean isNegativeCounter() {
-        CounterType c = this;
-        return (c == CounterType.AGE) || (c == CounterType.BLAZE) || (c == CounterType.BRIBERY) || (c == CounterType.DOOM)
-                || (c == CounterType.ICE) || (c == CounterType.M1M1) || (c == CounterType.M0M2) || (c == CounterType.M0M1)
-                || (c == CounterType.TIME);
-    }
 }
diff --git a/src/main/java/forge/card/ability/ai/CountersProliferateAi.java b/src/main/java/forge/card/ability/ai/CountersProliferateAi.java
index 2cc08206c1b..06f41c939e0 100644
--- a/src/main/java/forge/card/ability/ai/CountersProliferateAi.java
+++ b/src/main/java/forge/card/ability/ai/CountersProliferateAi.java
@@ -9,6 +9,7 @@ import forge.CardLists;
 import forge.CounterType;
 import forge.card.ability.SpellAbilityAi;
 import forge.card.spellability.SpellAbility;
+import forge.game.ai.ComputerUtil;
 import forge.game.player.Player;
 import forge.game.zone.ZoneType;
 
@@ -22,7 +23,7 @@ public class CountersProliferateAi extends SpellAbilityAi {
             @Override
             public boolean apply(final Card crd) {
                 for (final CounterType c1 : CounterType.values()) {
-                    if (crd.getCounters(c1) != 0 && !c1.isNegativeCounter()) {
+                    if (crd.getCounters(c1) != 0 && !ComputerUtil.isNegativeCounter(c1, crd)) {
                         return true;
                     }
                 }
@@ -34,7 +35,7 @@ public class CountersProliferateAi extends SpellAbilityAi {
             @Override
             public boolean apply(final Card crd) {
                 for (final CounterType c1 : CounterType.values()) {
-                    if (crd.getCounters(c1) != 0 && c1.isNegativeCounter()) {
+                    if (crd.getCounters(c1) != 0 && ComputerUtil.isNegativeCounter(c1, crd)) {
                         return true;
                     }
                 }
diff --git a/src/main/java/forge/card/ability/effects/CountersProliferateEffect.java b/src/main/java/forge/card/ability/effects/CountersProliferateEffect.java
index 98ab9860b34..987476913dc 100644
--- a/src/main/java/forge/card/ability/effects/CountersProliferateEffect.java
+++ b/src/main/java/forge/card/ability/effects/CountersProliferateEffect.java
@@ -12,6 +12,7 @@ import forge.GameEntity;
 import forge.Singletons;
 import forge.card.ability.SpellAbilityEffect;
 import forge.card.spellability.SpellAbility;
+import forge.game.ai.ComputerUtil;
 import forge.game.player.Player;
 import forge.game.zone.ZoneType;
 import forge.gui.input.InputProliferate;
@@ -56,10 +57,10 @@ public class CountersProliferateEffect extends SpellAbilityEffect {
             @Override
             public boolean apply(Card crd) {
                 for (final Entry<CounterType, Integer> c1 : crd.getCounters().entrySet()) {
-                    if (c1.getKey().isNegativeCounter() && enemies.contains(crd.getController())) {
+                    if (ComputerUtil.isNegativeCounter(c1.getKey(), crd) && enemies.contains(crd.getController())) {
                         return true;
                     }
-                    if (!c1.getKey().isNegativeCounter() && allies.contains(crd.getController())) {
+                    if (!ComputerUtil.isNegativeCounter(c1.getKey(), crd) && allies.contains(crd.getController())) {
                         return true;
                     }
                 }
@@ -102,12 +103,12 @@ public class CountersProliferateEffect extends SpellAbilityEffect {
         // computer
         for (final Card c : cardsToProliferate) {
             for (final Entry<CounterType, Integer> c1 : c.getCounters().entrySet()) {
-                if (c1.getKey().isNegativeCounter() && enemies.contains(c.getController()))
+                if (ComputerUtil.isNegativeCounter(c1.getKey(), c) && enemies.contains(c.getController()))
                 {
                     c.addCounter(c1.getKey(), 1, true);
                     break;
                 }
-                if (!c1.getKey().isNegativeCounter() && allies.contains(c.getController()))
+                if (!ComputerUtil.isNegativeCounter(c1.getKey(), c) && allies.contains(c.getController()))
                 {
                     c.addCounter(c1.getKey(), 1, true);
                     break;
diff --git a/src/main/java/forge/card/cost/CostRemoveAnyCounter.java b/src/main/java/forge/card/cost/CostRemoveAnyCounter.java
index 83f31ed57a7..0bfbfd36271 100644
--- a/src/main/java/forge/card/cost/CostRemoveAnyCounter.java
+++ b/src/main/java/forge/card/cost/CostRemoveAnyCounter.java
@@ -29,6 +29,7 @@ import forge.Singletons;
 import forge.card.ability.AbilityUtils;
 import forge.card.spellability.SpellAbility;
 import forge.game.Game;
+import forge.game.ai.ComputerUtil;
 import forge.game.player.Player;
 import forge.game.zone.ZoneType;
 import forge.gui.GuiChoose;
@@ -183,7 +184,7 @@ public class CostRemoveAnyCounter extends CostPartWithList {
         }
         Card valid = decision.cards.get(0);
         for (CounterType c1 : valid.getCounters().keySet()) {
-            if (valid.getCounters(c1) >= c && c1.isNegativeCounter()) {
+            if (valid.getCounters(c1) >= c && ComputerUtil.isNegativeCounter(c1, valid)) {
                 counterType = c1;
                 break;
             }
@@ -215,7 +216,7 @@ public class CostRemoveAnyCounter extends CostPartWithList {
             @Override
             public boolean apply(final Card crd) {
                 for (final CounterType c1 : CounterType.values()) {
-                    if (crd.getCounters(c1) >= c  && c1.isNegativeCounter()) {
+                    if (crd.getCounters(c1) >= c  && ComputerUtil.isNegativeCounter(c1, crd)) {
                         return true;
                     }
                 }
diff --git a/src/main/java/forge/game/ai/ComputerUtil.java b/src/main/java/forge/game/ai/ComputerUtil.java
index 352a9002906..7d5a47195ab 100644
--- a/src/main/java/forge/game/ai/ComputerUtil.java
+++ b/src/main/java/forge/game/ai/ComputerUtil.java
@@ -31,6 +31,7 @@ import forge.Card;
 import forge.CardLists;
 import forge.CardPredicates;
 import forge.Constant;
+import forge.CounterType;
 import forge.CardPredicates.Presets;
 import forge.CardUtil;
 import forge.ITargetable;
@@ -1695,4 +1696,14 @@ public class ComputerUtil {
         });
         return safeCards;
     }
+    
+    
+    // although this should be in AI's code 
+    public static boolean isNegativeCounter(CounterType type, Card c) {
+        return type == CounterType.AGE || type == CounterType.BLAZE || type == CounterType.BRIBERY || type == CounterType.DOOM
+                || type == CounterType.ICE || type == CounterType.M1M1 || type == CounterType.M0M2 || type == CounterType.M0M1
+                || type == CounterType.M1M0 || type == CounterType.M2M1 || type == CounterType.M2M2 || type == CounterType.MUSIC
+                || type == CounterType.PARALYZATION || type == CounterType.SHELL || type == CounterType.SLEEP 
+                || type == CounterType.SLEIGHT || (type == CounterType.TIME && !c.isInPlay()) || type == CounterType.WAGE;
+    }
 }