Revert "Skulk is now singleton"

This reverts commit 6ca03a339a.

Mage.Sets/src/mage/cards/b/BehindTheScenes.java

@@ -52,7 +52,7 @@ public class BehindTheScenes extends CardImpl {
 
         // Creatures you control have skulk.
         this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD,
-                new GainAbilityControlledEffect(SkulkAbility.getInstance(), Duration.WhileOnBattlefield, FILTER_PERMANENT_CREATURES)));
+                new GainAbilityControlledEffect(new SkulkAbility(), Duration.WhileOnBattlefield, FILTER_PERMANENT_CREATURES)));
 
         // {4}{W}: Creatures you control get +1/+1 until end of turn.
         this.addAbility(new SimpleActivatedAbility(Zone.BATTLEFIELD,

Mage.Sets/src/mage/cards/f/FarbogRevenant.java

@@ -49,7 +49,7 @@ public class FarbogRevenant extends CardImpl {
         this.toughness = new MageInt(3);
 
         // Skulk
-        this.addAbility(SkulkAbility.getInstance());
+        this.addAbility(new SkulkAbility());
 
         // Lifelink
         this.addAbility(LifelinkAbility.getInstance());

Mage.Sets/src/mage/cards/f/Fogwalker.java

@@ -60,7 +60,7 @@ public class Fogwalker extends CardImpl {
         this.toughness = new MageInt(3);
 
         // Skulk
-        this.addAbility(SkulkAbility.getInstance());
+        this.addAbility(new SkulkAbility());
         // When Fogwalker enters the battlefield, target creature an opponent controls doesn't untap during it controler's next untap step.
         EntersBattlefieldTriggeredAbility ability = new EntersBattlefieldTriggeredAbility(new DontUntapInControllersNextUntapStepTargetEffect());
         ability.addTarget(new TargetCreaturePermanent(filter));

Mage.Sets/src/mage/cards/f/ForgottenCreation.java

@@ -56,7 +56,7 @@ public class ForgottenCreation extends CardImpl {
         this.toughness = new MageInt(3);
 
         // Skulk
-        this.addAbility(SkulkAbility.getInstance());
+        this.addAbility(new SkulkAbility());
         // At the beginning of your upkeep, you may discard all the cards in your hand. If you do, draw that many cards.
         this.addAbility(new BeginningOfUpkeepTriggeredAbility(new ForgottenCreationEffect(), TargetController.YOU, true));
     }

Mage.Sets/src/mage/cards/f/FurtiveHomunculus.java

@@ -48,7 +48,7 @@ public class FurtiveHomunculus extends CardImpl {
         this.toughness = new MageInt(1);
 
         // Skulk (This creature can't be blocked by creatures with greater power.)
-        this.addAbility(SkulkAbility.getInstance());
+        this.addAbility(new SkulkAbility());
     }
 
     public FurtiveHomunculus(final FurtiveHomunculus card) {

Mage.Sets/src/mage/cards/o/OdricLunarchMarshal.java

@@ -171,7 +171,7 @@ class OdricLunarchMarshalEffect extends OneShotEffect {
         
         // Skulk
         if (game.getBattlefield().contains(filterSkulk, source.getControllerId(), 1, game)) {
-            game.addEffect(new GainAbilityControlledEffect(SkulkAbility.getInstance(), Duration.EndOfTurn, filterCreatures), source);
+            game.addEffect(new GainAbilityControlledEffect(new SkulkAbility(), Duration.EndOfTurn, filterCreatures), source);
         }
 
         // Trample
@@ -185,4 +185,4 @@ class OdricLunarchMarshalEffect extends OneShotEffect {
         }
         return true;
     }
-}
+}

Mage.Sets/src/mage/cards/p/PaleRiderOfTrostad.java

@@ -50,7 +50,7 @@ public class PaleRiderOfTrostad extends CardImpl {
         this.toughness = new MageInt(3);
 
         // Skulk
-        this.addAbility(SkulkAbility.getInstance());
+        this.addAbility(new SkulkAbility());
 
         // When Pale Rider of Trostad enters the battlefield, discard a card.
         this.addAbility(new EntersBattlefieldTriggeredAbility(new DiscardControllerEffect(1), false));

Mage.Sets/src/mage/cards/p/PersistentNightmare.java

@@ -54,7 +54,7 @@ public class PersistentNightmare extends CardImpl {
         this.nightCard = true;
 
         // Skulk
-        this.addAbility(SkulkAbility.getInstance());
+        this.addAbility(new SkulkAbility());
 
         // When Persistent Nightmare deals combat damage to a player, return it to its owner's hand.
         this.addAbility(new DealsCombatDamageToAPlayerTriggeredAbility(new ReturnToHandSourceEffect(), false));

Mage.Sets/src/mage/cards/r/RancidRats.java

@@ -50,7 +50,7 @@ public class RancidRats extends CardImpl {
         this.toughness = new MageInt(1);
 
         // Skulk
-        this.addAbility(SkulkAbility.getInstance());
+        this.addAbility(new SkulkAbility());
         // Deathtouch
         this.addAbility(DeathtouchAbility.getInstance());
     }

Mage.Sets/src/mage/cards/s/SkeletonKey.java

@@ -57,7 +57,7 @@ public class SkeletonKey extends CardImpl {
         this.subtype.add(SubType.EQUIPMENT);
 
         // Equipped creature has skulk.
-        this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new GainAbilityAttachedEffect(SkulkAbility.getInstance(), AttachmentType.EQUIPMENT)));
+        this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new GainAbilityAttachedEffect(new SkulkAbility(), AttachmentType.EQUIPMENT)));
 
         // Whenever equipped creature deals combat damage to a player, you may draw a card. if you do, discard a card.
         Ability ability = new DealsDamageToAPlayerAttachedTriggeredAbility(new DrawCardSourceControllerEffect(1), "equipped creature", true);

Mage.Sets/src/mage/cards/u/UninvitedGeist.java

@@ -54,7 +54,7 @@ public class UninvitedGeist extends CardImpl {
         this.secondSideCardClazz = UnimpededTrespasser.class;
 
         // Skulk (This creature can't be blocked by creatures with greater power.)
-        this.addAbility(SkulkAbility.getInstance());
+        this.addAbility(new SkulkAbility());
 
         // When Uninvited Geist deals combat damage to a player, transform it.
         this.addAbility(new TransformAbility());

Mage.Sets/src/mage/cards/v/VampireCutthroat.java

@@ -50,7 +50,7 @@ public class VampireCutthroat extends CardImpl {
         this.toughness = new MageInt(1);
 
         // Skulk
-        this.addAbility(SkulkAbility.getInstance());
+        this.addAbility(new SkulkAbility());
         // Lifelink
         this.addAbility(LifelinkAbility.getInstance());
     }

Mage.Sets/src/mage/cards/w/WharfInfiltrator.java

@@ -62,7 +62,7 @@ public class WharfInfiltrator extends CardImpl {
         this.toughness = new MageInt(1);
 
         // Skulk
-        this.addAbility(SkulkAbility.getInstance());
+        this.addAbility(new SkulkAbility());
 
         // Whenever Wharf Infiltrator deals combat damage to a player, you may draw a card. If you do, discard a card.
         Effect effect = new DrawDiscardControllerEffect();

Mage.Tests/src/test/java/org/mage/test/cards/abilities/add/GainAbilitiesTest.java

@@ -14,34 +14,34 @@ public class GainAbilitiesTest extends CardTestPlayerBase {
 
     /*
     Reported bug: Behind the Scenes grants skulk to all creatures instead of just ones under owner's control
-     */
+    */
     @Test
     public void behindTheScenesShouldOnlyGrantSkulkToCreaturesYouControl() {
-
+        
         /*
     Behind the Scenes {2}{B}
     Enchantment
     Creatures you control have skulk. (They can't be blocked by creatures with greater power.)
         {4}{W}: Creatures you control get +1/+1 until end of turn
-         */
+        */
-        String bScenes = "Behind the Scenes";
+        String bScenes = "Behind the Scenes";        
         String hGiant = "Hill Giant"; // {3}{R} 3/3
         String bSable = "Bronze Sable"; // {2} 2/1        
         String memnite = "Memnite"; // {0} 1/1
         String gBears = "Grizzly Bears"; // {1}{G} 2/2
-
+        
         addCard(Zone.BATTLEFIELD, playerA, bScenes);
         addCard(Zone.BATTLEFIELD, playerA, hGiant);
         addCard(Zone.BATTLEFIELD, playerA, bSable);
         addCard(Zone.BATTLEFIELD, playerB, memnite);
         addCard(Zone.BATTLEFIELD, playerB, gBears);
-
+        
         setStopAt(1, PhaseStep.PRECOMBAT_MAIN);
         execute();
-
+        
-        assertAbility(playerA, hGiant, SkulkAbility.getInstance(), true);
+        assertAbility(playerA, hGiant, new SkulkAbility(), true);
-        assertAbility(playerA, bSable, SkulkAbility.getInstance(), true);
+        assertAbility(playerA, bSable, new SkulkAbility(), true);
-        assertAbility(playerB, memnite, SkulkAbility.getInstance(), false);
+        assertAbility(playerB, memnite, new SkulkAbility(), false);
-        assertAbility(playerB, gBears, SkulkAbility.getInstance(), false);
+        assertAbility(playerB, gBears, new SkulkAbility(), false);
     }
 }

Mage/src/main/java/mage/abilities/keyword/SkulkAbility.java

@@ -5,12 +5,11 @@
  */
 package mage.abilities.keyword;
 
-import java.io.ObjectStreamException;
 import mage.abilities.Ability;
-import mage.abilities.EvasionAbility;
+import mage.abilities.StaticAbility;
-import mage.abilities.MageSingleton;
 import mage.abilities.effects.RestrictionEffect;
 import mage.constants.Duration;
+import mage.constants.Zone;
 import mage.game.Game;
 import mage.game.permanent.Permanent;
 
@@ -18,31 +17,26 @@ import mage.game.permanent.Permanent;
  *
  * @author LevelX2
  */
-public class SkulkAbility extends EvasionAbility implements MageSingleton {
+public class SkulkAbility extends StaticAbility {
 
-    private static final SkulkAbility instance = new SkulkAbility();
+    public SkulkAbility() {
-
+        super(Zone.BATTLEFIELD, new SkulkEffect(Duration.WhileOnBattlefield));
-    private Object readResolve() throws ObjectStreamException {
-        return instance;
     }
 
-    public static SkulkAbility getInstance() {
+    public SkulkAbility(final SkulkAbility ability) {
-        return instance;
+        super(ability);
-    }
-
-    private SkulkAbility() {
-        this.addEffect(new SkulkEffect(Duration.WhileOnBattlefield));
     }
 
     @Override
     public Ability copy() {
-        return instance;
+        return new SkulkAbility(this);
     }
 
     @Override
     public String getRule() {
         return "Skulk <i>(This creature can't be blocked by creatures with greater power.)</i>";
     }
+
 }
 
 class SkulkEffect extends RestrictionEffect {

Utils/keywords.txt

@@ -76,7 +76,7 @@ Shadow|instance|
 Shroud|instance|
 Soulbond|instance|
 Soulshift|number|
-Skulk|instance|
+Skulk|new|
 Storm|new|
 Sunburst|new|
 Swampcycling|cost|