From 137df7ce276aa634b3e6a09799be70b96977337e Mon Sep 17 00:00:00 2001
From: Susucre <34709007+Susucre@users.noreply.github.com>
Date: Mon, 1 Apr 2024 16:50:22 +0200
Subject: [PATCH] [OTJ] Implement Stubborn Burrowfiend

---
 .../src/mage/cards/s/StubbornBurrowfiend.java | 121 ++++++++++++++++++
 .../mage/sets/OutlawsOfThunderJunction.java   |   1 +
 2 files changed, 122 insertions(+)
 create mode 100644 Mage.Sets/src/mage/cards/s/StubbornBurrowfiend.java

diff --git a/Mage.Sets/src/mage/cards/s/StubbornBurrowfiend.java b/Mage.Sets/src/mage/cards/s/StubbornBurrowfiend.java
new file mode 100644
index 00000000000..649ae3b9bc4
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/s/StubbornBurrowfiend.java
@@ -0,0 +1,121 @@
+package mage.cards.s;
+
+import mage.MageInt;
+import mage.MageObjectReference;
+import mage.abilities.Ability;
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.dynamicvalue.common.CardsInControllerGraveyardCount;
+import mage.abilities.effects.Effect;
+import mage.abilities.effects.common.MillCardsControllerEffect;
+import mage.abilities.effects.common.continuous.BoostSourceEffect;
+import mage.abilities.hint.ValueHint;
+import mage.abilities.keyword.SaddleAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.filter.StaticFilters;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.util.CardUtil;
+import mage.watchers.Watcher;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+/**
+ * @author Susucr
+ */
+public final class StubbornBurrowfiend extends CardImpl {
+
+    private static final CardsInControllerGraveyardCount xValue = new CardsInControllerGraveyardCount(StaticFilters.FILTER_CARD_CREATURE);
+    private static final ValueHint hint = new ValueHint("Creature cards in your graveyard", xValue);
+
+    public StubbornBurrowfiend(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{1}{G}");
+
+        this.subtype.add(SubType.BADGER);
+        this.subtype.add(SubType.BEAST);
+        this.subtype.add(SubType.MOUNT);
+        this.power = new MageInt(2);
+        this.toughness = new MageInt(2);
+
+        // Whenever Stubborn Burrowfiend becomes saddled for the first time each turn, mill two cards, then Stubborn Burrowfiend gets +X/+X until end of turn, where X is the number of creature cards in your graveyard.
+        Ability ability = new StubbornBurrowfiendTriggeredAbility(new MillCardsControllerEffect(2));
+        ability.addEffect(new BoostSourceEffect(xValue, xValue, Duration.EndOfTurn));
+        ability.addHint(hint);
+        this.addAbility(ability, new StubbornBurrowFiendWatcher());
+
+        // Saddle 2
+        this.addAbility(new SaddleAbility(2));
+
+    }
+
+    private StubbornBurrowfiend(final StubbornBurrowfiend card) {
+        super(card);
+    }
+
+    @Override
+    public StubbornBurrowfiend copy() {
+        return new StubbornBurrowfiend(this);
+    }
+}
+
+class StubbornBurrowFiendWatcher extends Watcher {
+
+    // MOR -> number of times saddled this turn.
+    // Since Watcher are updated before triggers, we want to find 1 for the trigger.
+    private final Map<MageObjectReference, Integer> saddledCount = new HashMap<>();
+
+    StubbornBurrowFiendWatcher() {
+        super(WatcherScope.GAME);
+    }
+
+    @Override
+    public void watch(GameEvent event, Game game) {
+        if (event.getType() != GameEvent.EventType.MOUNT_SADDLED) {
+            return;
+        }
+        saddledCount.compute(new MageObjectReference(event.getTargetId(), game), CardUtil::setOrIncrementValue);
+    }
+
+    public Integer timesSaddledThisTurn(MageObjectReference mor) {
+        return saddledCount.getOrDefault(mor, 0);
+    }
+
+    @Override
+    public void reset() {
+        super.reset();
+        saddledCount.clear();
+    }
+}
+
+class StubbornBurrowfiendTriggeredAbility extends TriggeredAbilityImpl {
+
+    StubbornBurrowfiendTriggeredAbility(Effect effect) {
+        super(Zone.BATTLEFIELD, effect, false);
+        setTriggerPhrase("When {this} becomes saddled for the first time this turn, ");
+    }
+
+    private StubbornBurrowfiendTriggeredAbility(final StubbornBurrowfiendTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public StubbornBurrowfiendTriggeredAbility copy() {
+        return new StubbornBurrowfiendTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.MOUNT_SADDLED;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        StubbornBurrowFiendWatcher watcher = game.getState().getWatcher(StubbornBurrowFiendWatcher.class);
+        return watcher != null
+                && event.getSourceId().equals(this.getSourceId())
+                && 1 == watcher.timesSaddledThisTurn(new MageObjectReference(event.getTargetId(), game));
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/OutlawsOfThunderJunction.java b/Mage.Sets/src/mage/sets/OutlawsOfThunderJunction.java
index 93e91dd9076..d7db3c974bc 100644
--- a/Mage.Sets/src/mage/sets/OutlawsOfThunderJunction.java
+++ b/Mage.Sets/src/mage/sets/OutlawsOfThunderJunction.java
@@ -207,6 +207,7 @@ public final class OutlawsOfThunderJunction extends ExpansionSet {
         cards.add(new SetCardInfo("Sterling Keykeeper", 32, Rarity.COMMON, mage.cards.s.SterlingKeykeeper.class));
         cards.add(new SetCardInfo("Stingerback Terror", 147, Rarity.RARE, mage.cards.s.StingerbackTerror.class));
         cards.add(new SetCardInfo("Stoic Sphinx", 71, Rarity.RARE, mage.cards.s.StoicSphinx.class));
+        cards.add(new SetCardInfo("Stubborn Burrowfiend", 184, Rarity.UNCOMMON, mage.cards.s.StubbornBurrowfiend.class));
         cards.add(new SetCardInfo("Swamp", 274, Rarity.LAND, mage.cards.basiclands.Swamp.class, FULL_ART_BFZ_VARIOUS));
         cards.add(new SetCardInfo("Terror of the Peaks", 149, Rarity.MYTHIC, mage.cards.t.TerrorOfThePeaks.class));
         cards.add(new SetCardInfo("The Key to the Vault", 54, Rarity.RARE, mage.cards.t.TheKeyToTheVault.class));