diff --git a/Mage.Sets/src/mage/cards/s/StingingLionfish.java b/Mage.Sets/src/mage/cards/s/StingingLionfish.java
new file mode 100644
index 0000000000..4a885ea730
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/s/StingingLionfish.java
@@ -0,0 +1,85 @@
+package mage.cards.s;
+
+import mage.MageInt;
+import mage.abilities.common.SpellCastControllerTriggeredAbility;
+import mage.abilities.effects.common.MayTapOrUntapTargetEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.SubType;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.stack.Spell;
+import mage.target.common.TargetNonlandPermanent;
+import mage.watchers.common.SpellsCastWatcher;
+
+import java.util.List;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class StingingLionfish extends CardImpl {
+
+    public StingingLionfish(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT, CardType.CREATURE}, "{1}{U}");
+
+        this.subtype.add(SubType.FISH);
+        this.power = new MageInt(2);
+        this.toughness = new MageInt(1);
+
+        // Whenever you cast your first spell during each opponent's turn, you may tap or untap target nonland permanent.
+        this.addAbility(new StingingLionfishTriggeredAbility(), new SpellsCastWatcher());
+    }
+
+    private StingingLionfish(final StingingLionfish card) {
+        super(card);
+    }
+
+    @Override
+    public StingingLionfish copy() {
+        return new StingingLionfish(this);
+    }
+}
+
+class StingingLionfishTriggeredAbility extends SpellCastControllerTriggeredAbility {
+
+    StingingLionfishTriggeredAbility() {
+        super(new MayTapOrUntapTargetEffect(), false);
+        this.addTarget(new TargetNonlandPermanent());
+    }
+
+    private StingingLionfishTriggeredAbility(StingingLionfishTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public StingingLionfishTriggeredAbility copy() {
+        return new StingingLionfishTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        if (game.getActivePlayerId().equals(this.getControllerId()) // ignore controller turn
+                || !super.checkTrigger(event, game)) {
+            return false;
+        }
+
+        if (!game.getOpponents(this.getControllerId()).contains(game.getActivePlayerId())) {
+            return false;
+        }
+
+        SpellsCastWatcher watcher = game.getState().getWatcher(SpellsCastWatcher.class);
+        if (watcher == null) {
+            return false;
+        }
+
+        List<Spell> spells = watcher.getSpellsCastThisTurn(event.getPlayerId());
+        return spells != null && spells.size() == 1;
+    }
+
+    @Override
+    public String getRule() {
+        return "Whenever you cast your first spell during each opponent's turn, you mat tap or untap target permanent.";
+    }
+}
\ No newline at end of file
diff --git a/Mage.Sets/src/mage/sets/TherosBeyondDeath.java b/Mage.Sets/src/mage/sets/TherosBeyondDeath.java
index 752d77acb6..6cfd08ea77 100644
--- a/Mage.Sets/src/mage/sets/TherosBeyondDeath.java
+++ b/Mage.Sets/src/mage/sets/TherosBeyondDeath.java
@@ -93,6 +93,7 @@ public final class TherosBeyondDeath extends ExpansionSet {
         cards.add(new SetCardInfo("Setessan Petitioner", 199, Rarity.UNCOMMON, mage.cards.s.SetessanPetitioner.class));
         cards.add(new SetCardInfo("Sphinx Mindbreaker", 290, Rarity.RARE, mage.cards.s.SphinxMindbreaker.class));
         cards.add(new SetCardInfo("Staggering Insight", 228, Rarity.UNCOMMON, mage.cards.s.StaggeringInsight.class));
+        cards.add(new SetCardInfo("Stinging Lionfish", 69, Rarity.UNCOMMON, mage.cards.s.StingingLionfish.class));
         cards.add(new SetCardInfo("Storm's Wrath", 157, Rarity.RARE, mage.cards.s.StormsWrath.class));
         cards.add(new SetCardInfo("Swamp", 252, Rarity.LAND, mage.cards.basiclands.Swamp.class, FULL_ART_BFZ_VARIOUS));
         cards.add(new SetCardInfo("Sweet Oblivion", 70, Rarity.UNCOMMON, mage.cards.s.SweetOblivion.class));