* Fixed some target pointer handling (fixes #4540).

Mage.Sets/src/mage/cards/a/ActOfAuthority.java

@@ -27,6 +27,7 @@
  */
 package mage.cards.a;
 
+import java.util.UUID;
 import mage.abilities.Ability;
 import mage.abilities.Mode;
 import mage.abilities.common.BeginningOfUpkeepTriggeredAbility;
@@ -44,8 +45,6 @@ import mage.game.permanent.Permanent;
 import mage.target.TargetPermanent;
 import mage.target.targetpointer.FixedTarget;
 
-import java.util.UUID;
-
 /**
  *
  * @author LevelX2
@@ -53,8 +52,7 @@ import java.util.UUID;
 public class ActOfAuthority extends CardImpl {
 
     public ActOfAuthority(UUID ownerId, CardSetInfo setInfo) {
-        super(ownerId,setInfo,new CardType[]{CardType.ENCHANTMENT},"{1}{W}{W}");
+        super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{1}{W}{W}");
-
 
         // When Act of Authority enters the battlefield, you may exile target artifact or enchantment.
         Ability ability = new EntersBattlefieldTriggeredAbility(new ExileTargetEffect(), true);

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

@@ -103,7 +103,7 @@ class BackFromTheBrinkCost extends CostImpl {
             if (controller != null) {
                 Card card = controller.getGraveyard().get(targets.getFirstTarget(), game);
                 if (card != null && controller.moveCards(card, Zone.EXILED, ability, game)) {
-                    ability.getEffects().get(0).setTargetPointer(new FixedTarget(card.getId()));
+                    ability.getEffects().get(0).setTargetPointer(new FixedTarget(card.getId(), game.getState().getZoneChangeCounter(card.getId())));
                     paid = card.getManaCost().pay(ability, game, sourceId, controllerId, noMana);
                 }
             }

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

@@ -85,12 +85,12 @@ class BarrinsUnmakingEffect extends OneShotEffect {
 
     @Override
     public boolean apply(Game game, Ability source) {
-        Permanent permanent = game.getPermanent(source.getFirstTarget());
+        Permanent permanent = game.getPermanent(getTargetPointer().getFirst(game, source));
         if (permanent != null) {
             Condition condition = new MostCommonColorCondition(permanent.getColor(game));
             if (condition.apply(game, source)) {
                 Effect effect = new ReturnToHandTargetEffect();
-                effect.setTargetPointer(new FixedTarget(permanent.getId()));
+                effect.setTargetPointer(new FixedTarget(permanent, game));
                 return effect.apply(game, source);
             }
         }

Mage.Sets/src/mage/cards/m/MimicVat.java

@@ -38,8 +38,8 @@ import mage.abilities.common.delayed.AtTheBeginOfNextEndStepDelayedTriggeredAbil
 import mage.abilities.costs.common.TapSourceCost;
 import mage.abilities.costs.mana.GenericManaCost;
 import mage.abilities.effects.OneShotEffect;
-import mage.abilities.effects.common.ExileTargetEffect;
 import mage.abilities.effects.common.CreateTokenCopyTargetEffect;
+import mage.abilities.effects.common.ExileTargetEffect;
 import mage.cards.Card;
 import mage.cards.CardImpl;
 import mage.cards.CardSetInfo;
@@ -122,7 +122,7 @@ class MimicVatTriggeredAbility extends TriggeredAbilityImpl {
                 && !(permanent instanceof PermanentToken)
                 && permanent.isCreature()) {
 
-            getEffects().get(0).setTargetPointer(new FixedTarget(permanent.getId()));
+            getEffects().get(0).setTargetPointer(new FixedTarget(permanent.getId(), game));
             return true;
         }
         return false;
@@ -152,22 +152,22 @@ class MimicVatEffect extends OneShotEffect {
         if (controller == null || permanent == null) {
             return false;
         }
-        // return older cards to graveyard
-        Set<Card> toGraveyard = new HashSet<>();
-        for (UUID imprintedId : permanent.getImprinted()) {
-            Card card = game.getCard(imprintedId);
-            if (card != null) {
-                toGraveyard.add(card);
-            }
-        }
-        controller.moveCards(toGraveyard, Zone.GRAVEYARD, source, game);
-        permanent.clearImprinted(game);
-
         // Imprint a new one
-        Card card = game.getCard(getTargetPointer().getFirst(game, source));
+        Card newCard = game.getCard(getTargetPointer().getFirst(game, source));
-        if (card != null) {
+        if (newCard != null) {
-            controller.moveCardsToExile(card, source, game, true, source.getSourceId(), permanent.getName() + " (Imprint)");
+            // return older cards to graveyard
-            permanent.imprint(card.getId(), game);
+            Set<Card> toGraveyard = new HashSet<>();
+            for (UUID imprintedId : permanent.getImprinted()) {
+                Card card = game.getCard(imprintedId);
+                if (card != null) {
+                    toGraveyard.add(card);
+                }
+            }
+            controller.moveCards(toGraveyard, Zone.GRAVEYARD, source, game);
+            permanent.clearImprinted(game);
+
+            controller.moveCardsToExile(newCard, source, game, true, source.getSourceId(), permanent.getName() + " (Imprint)");
+            permanent.imprint(newCard.getId(), game);
         }
 
         return true;

Mage.Tests/src/test/java/org/mage/test/cards/copy/MimicVatTest.java

@@ -111,4 +111,47 @@ public class MimicVatTest extends CardTestPlayerBase {
 
     }
 
+    /**
+     * Player A has Mimic Vat and plays Sidisi, Undead Vizier and exploits.
+     * Player N responds to Mimic Vat Trigger with Shred Memory, exiling Sidisi.
+     * Sidisi gets exiled but then xmage allows player A to imprint the
+     * creature, which shouldn't be possible.
+     */
+    @Test
+    public void TestExileFails() {
+        addCard(Zone.BATTLEFIELD, playerA, "Mountain", 1);
+        // Imprint - Whenever a nontoken creature dies, you may exile that card. If you do, return each other card exiled with Mimic Vat to its owner's graveyard.
+        // {3}, {T}: Create a token that's a copy of a card exiled with Mimic Vat. It gains haste. Exile it at the beginning of the next end step.
+        addCard(Zone.BATTLEFIELD, playerA, "Mimic Vat", 1); // Artifact {3}
+
+        addCard(Zone.HAND, playerA, "Lightning Bolt", 1);
+
+        addCard(Zone.BATTLEFIELD, playerB, "Swamp", 2);
+        // Exile up to four target cards from a single graveyard.
+        // Transmute {1}{B}{B}
+        addCard(Zone.HAND, playerB, "Shred Memory", 1); // Instant {1}{B}
+
+        addCard(Zone.BATTLEFIELD, playerB, "Silvercoat Lion", 1);
+
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Lightning Bolt", "Silvercoat Lion");
+        setChoice(playerA, "Yes");
+        setChoice(playerA, "Silvercoat Lion");
+
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerB, "Shred Memory", "Silvercoat Lion", "Whenever a nontoken creature dies");
+        setChoice(playerA, "Yes");
+
+        activateAbility(3, PhaseStep.PRECOMBAT_MAIN, playerA, "{3}, {T}: Create a token that's a copy of a card exiled with ");
+        setChoice(playerA, "Yes");
+        setChoice(playerA, "Silvercoat Lion");
+
+        setStopAt(3, PhaseStep.BEGIN_COMBAT);
+        execute();
+
+        assertGraveyardCount(playerA, "Lightning Bolt", 1);
+        assertGraveyardCount(playerB, "Shred Memory", 1);
+
+        assertExileCount(playerB, "Silvercoat Lion", 1);
+        assertPermanentCount(playerA, "Silvercoat Lion", 0);
+
+    }
 }