diff --git a/Mage.Sets/src/mage/cards/r/RamsesAssassinLord.java b/Mage.Sets/src/mage/cards/r/RamsesAssassinLord.java
new file mode 100644
index 0000000000..e8b20f8e95
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/r/RamsesAssassinLord.java
@@ -0,0 +1,126 @@
+package mage.cards.r;
+
+import mage.MageInt;
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.effects.common.WinGameSourceControllerEffect;
+import mage.abilities.effects.common.continuous.BoostControlledEffect;
+import mage.abilities.keyword.DeathtouchAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.filter.common.FilterCreaturePermanent;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+import mage.watchers.Watcher;
+
+import java.util.*;
+
+/**
+ * @author TheElk801
+ */
+public final class RamsesAssassinLord extends CardImpl {
+
+    private static final FilterCreaturePermanent filter
+            = new FilterCreaturePermanent(SubType.ASSASSIN, "Assassins");
+
+    public RamsesAssassinLord(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{2}{U}{B}");
+
+        this.addSuperType(SuperType.LEGENDARY);
+        this.subtype.add(SubType.HUMAN);
+        this.subtype.add(SubType.ASSASSIN);
+        this.power = new MageInt(4);
+        this.toughness = new MageInt(4);
+
+        // Deathtouch
+        this.addAbility(DeathtouchAbility.getInstance());
+
+        // Other Assassins you control get +1/+1.
+        this.addAbility(new SimpleStaticAbility(new BoostControlledEffect(
+                1, 1, Duration.WhileOnBattlefield, filter, false
+        )));
+
+        // Whenever a player loses the game, if they were attacked this turn by an Assassin you controlled, you win the game.
+        this.addAbility(new RamsesAssassinLordTriggeredAbility());
+    }
+
+    private RamsesAssassinLord(final RamsesAssassinLord card) {
+        super(card);
+    }
+
+    @Override
+    public RamsesAssassinLord copy() {
+        return new RamsesAssassinLord(this);
+    }
+}
+
+class RamsesAssassinLordTriggeredAbility extends TriggeredAbilityImpl {
+
+    RamsesAssassinLordTriggeredAbility() {
+        super(Zone.BATTLEFIELD, new WinGameSourceControllerEffect());
+        this.addWatcher(new RamsesAssassinLordWatcher());
+    }
+
+    private RamsesAssassinLordTriggeredAbility(final RamsesAssassinLordTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public RamsesAssassinLordTriggeredAbility copy() {
+        return new RamsesAssassinLordTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.LOSES;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        return RamsesAssassinLordWatcher.check(event.getTargetId(), getSourceId(), game);
+    }
+
+    @Override
+    public String getRule() {
+        return "Whenever a player loses the game, if they were attacked " +
+                "this turn by an Assassin you controlled, you win the game.";
+    }
+}
+
+class RamsesAssassinLordWatcher extends Watcher {
+
+    private final Map<UUID, Set<UUID>> map = new HashMap<>();
+
+    RamsesAssassinLordWatcher() {
+        super(WatcherScope.GAME);
+    }
+
+    @Override
+    public void watch(GameEvent event, Game game) {
+        if (event.getType() != GameEvent.EventType.ATTACKER_DECLARED
+                || game.getPlayer(event.getTargetId()) == null) {
+            return;
+        }
+        Permanent permanent = game.getPermanent(event.getSourceId());
+        if (permanent != null && permanent.hasSubtype(SubType.ASSASSIN, game)) {
+            map.computeIfAbsent(event.getTargetId(), x -> new HashSet<>()).add(permanent.getControllerId());
+        }
+    }
+
+    @Override
+    public void reset() {
+        super.reset();
+        map.clear();
+    }
+
+    static boolean check(UUID defenderId, UUID controllerId, Game game) {
+        return game
+                .getState()
+                .getWatcher(RamsesAssassinLordWatcher.class)
+                .map
+                .getOrDefault(defenderId, Collections.emptySet())
+                .contains(controllerId);
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/DominariaUnitedCommander.java b/Mage.Sets/src/mage/sets/DominariaUnitedCommander.java
index d28fcf749d..52085d42a8 100644
--- a/Mage.Sets/src/mage/sets/DominariaUnitedCommander.java
+++ b/Mage.Sets/src/mage/sets/DominariaUnitedCommander.java
@@ -159,6 +159,7 @@ public final class DominariaUnitedCommander extends ExpansionSet {
         cards.add(new SetCardInfo("Prophetic Prism", 189, Rarity.COMMON, mage.cards.p.PropheticPrism.class));
         cards.add(new SetCardInfo("Radiant Flames", 126, Rarity.RARE, mage.cards.r.RadiantFlames.class));
         cards.add(new SetCardInfo("Rakdos Carnarium", 226, Rarity.UNCOMMON, mage.cards.r.RakdosCarnarium.class));
+        cards.add(new SetCardInfo("Ramses, Assassin Lord", 39, Rarity.RARE, mage.cards.r.RamsesAssassinLord.class));
         cards.add(new SetCardInfo("Rasputin, the Oneiromancer", 40, Rarity.RARE, mage.cards.r.RasputinTheOneiromancer.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Rasputin, the Oneiromancer", 62, Rarity.RARE, mage.cards.r.RasputinTheOneiromancer.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Read the Bones", 117, Rarity.COMMON, mage.cards.r.ReadTheBones.class));