From ee94be7322cd067383af20068ef1391ceb02c57c Mon Sep 17 00:00:00 2001
From: Cameron Merkel <44722506+Cguy7777@users.noreply.github.com>
Date: Thu, 4 Apr 2024 15:20:16 -0500
Subject: [PATCH] [MKM] Implement Unyielding Gatekeeper (#12045)

---
 .../mage/cards/u/UnyieldingGatekeeper.java    | 101 ++++++++++++++++++
 .../src/mage/sets/MurdersAtKarlovManor.java   |   2 +
 2 files changed, 103 insertions(+)
 create mode 100644 Mage.Sets/src/mage/cards/u/UnyieldingGatekeeper.java

diff --git a/Mage.Sets/src/mage/cards/u/UnyieldingGatekeeper.java b/Mage.Sets/src/mage/cards/u/UnyieldingGatekeeper.java
new file mode 100644
index 00000000000..139dc896374
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/u/UnyieldingGatekeeper.java
@@ -0,0 +1,101 @@
+package mage.cards.u;
+
+import java.util.UUID;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.TurnedFaceUpSourceTriggeredAbility;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.CreateTokenControllerTargetPermanentEffect;
+import mage.abilities.effects.common.ExileTargetEffect;
+import mage.abilities.effects.common.ExileThenReturnTargetEffect;
+import mage.constants.Outcome;
+import mage.constants.PutCards;
+import mage.constants.SubType;
+import mage.abilities.costs.mana.ManaCostsImpl;
+import mage.abilities.keyword.DisguiseAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.filter.common.FilterNonlandPermanent;
+import mage.filter.predicate.mageobject.AnotherPredicate;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.game.permanent.token.DetectiveToken;
+import mage.target.common.TargetNonlandPermanent;
+
+/**
+ * @author Cguy7777
+ */
+public final class UnyieldingGatekeeper extends CardImpl {
+
+    private static final FilterNonlandPermanent filter = new FilterNonlandPermanent();
+
+    static {
+        filter.add(AnotherPredicate.instance);
+    }
+
+    public UnyieldingGatekeeper(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{1}{W}");
+
+        this.subtype.add(SubType.ELEPHANT);
+        this.subtype.add(SubType.CLERIC);
+        this.power = new MageInt(3);
+        this.toughness = new MageInt(2);
+
+        // Disguise {1}{W}
+        this.addAbility(new DisguiseAbility(this, new ManaCostsImpl<>("{1}{W}")));
+
+        // When Unyielding Gatekeeper is turned face up, exile another target nonland permanent.
+        // If you controlled it, return it to the battlefield tapped.
+        // Otherwise, its controller creates a 2/2 white and blue Detective creature token.
+        Ability ability = new TurnedFaceUpSourceTriggeredAbility(new UnyieldingGatekeeperEffect());
+        ability.addTarget(new TargetNonlandPermanent(filter));
+        this.addAbility(ability);
+    }
+
+    private UnyieldingGatekeeper(final UnyieldingGatekeeper card) {
+        super(card);
+    }
+
+    @Override
+    public UnyieldingGatekeeper copy() {
+        return new UnyieldingGatekeeper(this);
+    }
+}
+
+class UnyieldingGatekeeperEffect extends OneShotEffect {
+
+    UnyieldingGatekeeperEffect() {
+        super(Outcome.Benefit);
+        staticText = "exile another target nonland permanent. " +
+                "If you controlled it, return it to the battlefield tapped. " +
+                "Otherwise, its controller creates a 2/2 white and blue Detective creature token";
+    }
+
+    private UnyieldingGatekeeperEffect(final UnyieldingGatekeeperEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Permanent permanent = game.getPermanent(getTargetPointer().getFirst(game, source));
+        if (permanent == null) {
+            return false;
+        }
+
+        if (permanent.isControlledBy(source.getControllerId())) {
+            new ExileThenReturnTargetEffect(
+                    false, false, PutCards.BATTLEFIELD_TAPPED).apply(game, source);
+        } else {
+            new ExileTargetEffect().apply(game, source);
+            new CreateTokenControllerTargetPermanentEffect(new DetectiveToken()).apply(game, source);
+        }
+        return true;
+    }
+
+    @Override
+    public UnyieldingGatekeeperEffect copy() {
+        return new UnyieldingGatekeeperEffect(this);
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/MurdersAtKarlovManor.java b/Mage.Sets/src/mage/sets/MurdersAtKarlovManor.java
index 167b387aeaa..337d93fe4d7 100644
--- a/Mage.Sets/src/mage/sets/MurdersAtKarlovManor.java
+++ b/Mage.Sets/src/mage/sets/MurdersAtKarlovManor.java
@@ -275,6 +275,8 @@ public final class MurdersAtKarlovManor extends ExpansionSet {
         cards.add(new SetCardInfo("Underground Mortuary", 271, Rarity.RARE, mage.cards.u.UndergroundMortuary.class));
         cards.add(new SetCardInfo("Undergrowth Recon", 181, Rarity.MYTHIC, mage.cards.u.UndergrowthRecon.class));
         cards.add(new SetCardInfo("Unscrupulous Agent", 109, Rarity.COMMON, mage.cards.u.UnscrupulousAgent.class));
+        cards.add(new SetCardInfo("Unyielding Gatekeeper", 35, Rarity.RARE, mage.cards.u.UnyieldingGatekeeper.class, NON_FULL_USE_VARIOUS));
+        cards.add(new SetCardInfo("Unyielding Gatekeeper", 392, Rarity.RARE, mage.cards.u.UnyieldingGatekeeper.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Urgent Necropsy", 240, Rarity.MYTHIC, mage.cards.u.UrgentNecropsy.class));
         cards.add(new SetCardInfo("Vein Ripper", 110, Rarity.MYTHIC, mage.cards.v.VeinRipper.class));
         cards.add(new SetCardInfo("Vengeful Creeper", 182, Rarity.COMMON, mage.cards.v.VengefulCreeper.class));