diff --git a/Mage.Sets/src/mage/cards/u/UkkimaStalkingShadow.java b/Mage.Sets/src/mage/cards/u/UkkimaStalkingShadow.java
new file mode 100644
index 0000000000..3f49706835
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/u/UkkimaStalkingShadow.java
@@ -0,0 +1,90 @@
+package mage.cards.u;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.LeavesBattlefieldTriggeredAbility;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.keyword.CantBeBlockedSourceAbility;
+import mage.abilities.keyword.PartnerWithAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Outcome;
+import mage.constants.SubType;
+import mage.constants.SuperType;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+import mage.target.TargetPlayer;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class UkkimaStalkingShadow extends CardImpl {
+
+    public UkkimaStalkingShadow(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{1}{U}{B}");
+
+        this.addSuperType(SuperType.LEGENDARY);
+        this.subtype.add(SubType.WHALE);
+        this.subtype.add(SubType.WOLF);
+        this.power = new MageInt(2);
+        this.toughness = new MageInt(2);
+
+        // Partner with Cazur, Ruthless Stalker
+        this.addAbility(new PartnerWithAbility("Cazur, Ruthless Stalker"));
+
+        // Ukkima, Stalking Shadow can't be blocked.
+        this.addAbility(new CantBeBlockedSourceAbility());
+
+        // When Ukkima leaves the battlefield, it deals X damage to target player and you gain X life, where X is its power.
+        Ability ability = new LeavesBattlefieldTriggeredAbility(new UkkimaStalkingShadowEffect(), false);
+        ability.addTarget(new TargetPlayer());
+        this.addAbility(ability);
+    }
+
+    private UkkimaStalkingShadow(final UkkimaStalkingShadow card) {
+        super(card);
+    }
+
+    @Override
+    public UkkimaStalkingShadow copy() {
+        return new UkkimaStalkingShadow(this);
+    }
+}
+
+class UkkimaStalkingShadowEffect extends OneShotEffect {
+
+    UkkimaStalkingShadowEffect() {
+        super(Outcome.Benefit);
+        staticText = "it deals X damage to target player and you gain X life, where X is its power.";
+    }
+
+    private UkkimaStalkingShadowEffect(final UkkimaStalkingShadowEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public UkkimaStalkingShadowEffect copy() {
+        return new UkkimaStalkingShadowEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Permanent permanent = game.getPermanentOrLKIBattlefield(source.getSourceId());
+        if (permanent == null || permanent.getPower().getValue() <= 0) {
+            return false;
+        }
+        Player player = game.getPlayer(source.getFirstTarget());
+        if (player != null) {
+            player.damage(permanent.getPower().getValue(), source.getSourceId(), game);
+        }
+        Player controller = game.getPlayer(source.getControllerId());
+        if (controller != null) {
+            controller.gainLife(permanent.getPower().getValue(), game, source);
+        }
+        return true;
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/Commander2020Edition.java b/Mage.Sets/src/mage/sets/Commander2020Edition.java
index 6e48c4e126..f16285a968 100644
--- a/Mage.Sets/src/mage/sets/Commander2020Edition.java
+++ b/Mage.Sets/src/mage/sets/Commander2020Edition.java
@@ -303,6 +303,7 @@ public final class Commander2020Edition extends ExpansionSet {
         cards.add(new SetCardInfo("Tribute to the Wild", 193, Rarity.UNCOMMON, mage.cards.t.TributeToTheWild.class));
         cards.add(new SetCardInfo("Trygon Predator", 232, Rarity.UNCOMMON, mage.cards.t.TrygonPredator.class));
         cards.add(new SetCardInfo("Trynn, Champion of Freedom", 1, Rarity.MYTHIC, mage.cards.t.TrynnChampionOfFreedom.class));
+        cards.add(new SetCardInfo("Ukkima, Stalking Shadow", 17, Rarity.MYTHIC, mage.cards.u.UkkimaStalkingShadow.class));
         cards.add(new SetCardInfo("Unburial Rites", 139, Rarity.UNCOMMON, mage.cards.u.UnburialRites.class));
         cards.add(new SetCardInfo("Unclaimed Territory", 320, Rarity.UNCOMMON, mage.cards.u.UnclaimedTerritory.class));
         cards.add(new SetCardInfo("Unexpectedly Absent", 106, Rarity.RARE, mage.cards.u.UnexpectedlyAbsent.class));