From c76ffbb3f5eb1731e172553acd086ab32631edf0 Mon Sep 17 00:00:00 2001
From: theelk801 <theelk801@gmail.com>
Date: Thu, 13 Nov 2025 10:20:13 -0500
Subject: [PATCH] [TLE] Implement Bison Whistle

---
 Mage.Sets/src/mage/cards/b/BisonWhistle.java  | 93 +++++++++++++++++++
 .../sets/AvatarTheLastAirbenderEternal.java   |  2 +
 2 files changed, 95 insertions(+)
 create mode 100644 Mage.Sets/src/mage/cards/b/BisonWhistle.java

diff --git a/Mage.Sets/src/mage/cards/b/BisonWhistle.java b/Mage.Sets/src/mage/cards/b/BisonWhistle.java
new file mode 100644
index 00000000000..19cfa97f413
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/b/BisonWhistle.java
@@ -0,0 +1,93 @@
+package mage.cards.b;
+
+import mage.abilities.Ability;
+import mage.abilities.common.SimpleActivatedAbility;
+import mage.abilities.costs.common.TapSourceCost;
+import mage.abilities.costs.mana.GenericManaCost;
+import mage.abilities.effects.OneShotEffect;
+import mage.cards.Card;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.cards.CardsImpl;
+import mage.constants.CardType;
+import mage.constants.Outcome;
+import mage.constants.SubType;
+import mage.constants.Zone;
+import mage.game.Game;
+import mage.players.Player;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class BisonWhistle extends CardImpl {
+
+    public BisonWhistle(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT}, "{1}{G}");
+
+        // {1}, {T}: Look at the top card of your library. If it's a Bison card, you may put it onto the battlefield. If it's a creature card, you may reveal it and put it into your hand. Otherwise, you may put it into your graveyard.
+        Ability ability = new SimpleActivatedAbility(new BisonWhistleEffect(), new GenericManaCost(1));
+        ability.addCost(new TapSourceCost());
+        this.addAbility(ability);
+    }
+
+    private BisonWhistle(final BisonWhistle card) {
+        super(card);
+    }
+
+    @Override
+    public BisonWhistle copy() {
+        return new BisonWhistle(this);
+    }
+}
+
+class BisonWhistleEffect extends OneShotEffect {
+
+    BisonWhistleEffect() {
+        super(Outcome.Benefit);
+        staticText = "look at the top card of your library. If it's a Bison card, you may put it onto the battlefield. " +
+                "If it's a creature card, you may reveal it and put it into your hand. Otherwise, you may put it into your graveyard";
+    }
+
+    private BisonWhistleEffect(final BisonWhistleEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public BisonWhistleEffect copy() {
+        return new BisonWhistleEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(source.getControllerId());
+        if (player == null) {
+            return false;
+        }
+        Card card = player.getLibrary().getFromTop(game);
+        if (card == null) {
+            return false;
+        }
+        player.lookAtCards("Top of library", card, game);
+        if (card.hasSubtype(SubType.BISON, game) && player.chooseUse(
+                Outcome.PutCardInPlay, "Put " + card.getIdName() + " onto the battlefield?", source, game
+        )) {
+            player.moveCards(card, Zone.BATTLEFIELD, source, game);
+            // cards like Crib Swap and Containment Priest make it possible for the card
+            // to either stay in the library or go to a different zone, so we only exit if it's not still on top
+            if (!Zone.LIBRARY.match(game.getState().getZone(card.getId()))) {
+                return true;
+            }
+        }
+        if (card.isCreature(game) && player.chooseUse(
+                Outcome.DrawCard, "Put " + card.getIdName() + " into your hand?", source, game
+        )) {
+            player.revealCards(source, new CardsImpl(card), game);
+            return player.moveCards(card, Zone.HAND, source, game);
+        }
+        return player.chooseUse(
+                Outcome.Discard, "Put " + card.getIdName() + " into your graveyard?", source, game
+        ) && player.moveCards(card, Zone.GRAVEYARD, source, game);
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/AvatarTheLastAirbenderEternal.java b/Mage.Sets/src/mage/sets/AvatarTheLastAirbenderEternal.java
index 4dbf8422e91..a559a19d210 100644
--- a/Mage.Sets/src/mage/sets/AvatarTheLastAirbenderEternal.java
+++ b/Mage.Sets/src/mage/sets/AvatarTheLastAirbenderEternal.java
@@ -52,6 +52,8 @@ public final class AvatarTheLastAirbenderEternal extends ExpansionSet {
         cards.add(new SetCardInfo("Baboon Spirit", 89, Rarity.RARE, mage.cards.b.BaboonSpirit.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Bastion of Remembrance", 160, Rarity.UNCOMMON, mage.cards.b.BastionOfRemembrance.class));
         cards.add(new SetCardInfo("Beastmaster Ascension", 39, Rarity.MYTHIC, mage.cards.b.BeastmasterAscension.class));
+        cards.add(new SetCardInfo("Bison Whistle", 131, Rarity.RARE, mage.cards.b.BisonWhistle.class, NON_FULL_USE_VARIOUS));
+        cards.add(new SetCardInfo("Bison Whistle", 202, Rarity.RARE, mage.cards.b.BisonWhistle.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Black Sun's Zenith", 22, Rarity.MYTHIC, mage.cards.b.BlackSunsZenith.class));
         cards.add(new SetCardInfo("Blasphemous Act", 26, Rarity.MYTHIC, mage.cards.b.BlasphemousAct.class));
         cards.add(new SetCardInfo("Bloodchief Ascension", 23, Rarity.MYTHIC, mage.cards.b.BloodchiefAscension.class));