diff --git a/Mage.Sets/src/mage/cards/m/ManifoldKey.java b/Mage.Sets/src/mage/cards/m/ManifoldKey.java
new file mode 100644
index 0000000000..87cb68873c
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/m/ManifoldKey.java
@@ -0,0 +1,56 @@
+package mage.cards.m;
+
+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.common.UntapTargetEffect;
+import mage.abilities.effects.common.combat.CantBeBlockedTargetEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Duration;
+import mage.filter.FilterPermanent;
+import mage.filter.common.FilterArtifactPermanent;
+import mage.filter.predicate.permanent.AnotherPredicate;
+import mage.target.TargetPermanent;
+import mage.target.common.TargetCreaturePermanent;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class ManifoldKey extends CardImpl {
+
+    private static final FilterPermanent filter = new FilterArtifactPermanent("another target artifact");
+
+    static {
+        filter.add(AnotherPredicate.instance);
+    }
+
+    public ManifoldKey(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT}, "{1}");
+
+        // {1}, {T}: Untap another target artifact.
+        Ability ability = new SimpleActivatedAbility(new UntapTargetEffect(), new GenericManaCost(1));
+        ability.addCost(new TapSourceCost());
+        ability.addTarget(new TargetPermanent(filter));
+        this.addAbility(ability);
+
+        // {3}, {T}: Target creature can't be blocked this turn.
+        ability = new SimpleActivatedAbility(new CantBeBlockedTargetEffect(Duration.EndOfTurn), new GenericManaCost(3));
+        ability.addCost(new TapSourceCost());
+        ability.addTarget(new TargetCreaturePermanent());
+        this.addAbility(ability);
+    }
+
+    private ManifoldKey(final ManifoldKey card) {
+        super(card);
+    }
+
+    @Override
+    public ManifoldKey copy() {
+        return new ManifoldKey(this);
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/CoreSet2020.java b/Mage.Sets/src/mage/sets/CoreSet2020.java
index 55cd78517b..141de54c8c 100644
--- a/Mage.Sets/src/mage/sets/CoreSet2020.java
+++ b/Mage.Sets/src/mage/sets/CoreSet2020.java
@@ -75,6 +75,7 @@ public final class CoreSet2020 extends ExpansionSet {
         cards.add(new SetCardInfo("Loaming Shaman", 180, Rarity.UNCOMMON, mage.cards.l.LoamingShaman.class));
         cards.add(new SetCardInfo("Loxodon Lifechanter", 27, Rarity.RARE, mage.cards.l.LoxodonLifechanter.class));
         cards.add(new SetCardInfo("Loyal Pegasus", 28, Rarity.UNCOMMON, mage.cards.l.LoyalPegasus.class));
+        cards.add(new SetCardInfo("Manifold Key", 230, Rarity.UNCOMMON, mage.cards.m.ManifoldKey.class));
         cards.add(new SetCardInfo("Moldervine Reclamation", 214, Rarity.UNCOMMON, mage.cards.m.MoldervineReclamation.class));
         cards.add(new SetCardInfo("Negate", 69, Rarity.COMMON, mage.cards.n.Negate.class));
         cards.add(new SetCardInfo("Octoprophet", 70, Rarity.COMMON, mage.cards.o.Octoprophet.class));