diff --git a/Mage.Sets/src/mage/cards/m/MysteriousEgg.java b/Mage.Sets/src/mage/cards/m/MysteriousEgg.java
new file mode 100644
index 00000000000..13cbee14297
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/m/MysteriousEgg.java
@@ -0,0 +1,40 @@
+package mage.cards.m;
+
+import mage.MageInt;
+import mage.abilities.common.MutatesSourceTriggeredAbility;
+import mage.abilities.effects.common.counter.AddCountersSourceEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.SubType;
+import mage.counters.CounterType;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class MysteriousEgg extends CardImpl {
+
+    public MysteriousEgg(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{1}");
+
+        this.subtype.add(SubType.EGG);
+        this.power = new MageInt(0);
+        this.toughness = new MageInt(2);
+
+        // Whenever this creature mutates, put a +1/+1 counter on it.
+        this.addAbility(new MutatesSourceTriggeredAbility(
+                new AddCountersSourceEffect(CounterType.P1P1.createInstance()).setText("put a +1/+1 counter on it")
+        ));
+    }
+
+    private MysteriousEgg(final MysteriousEgg card) {
+        super(card);
+    }
+
+    @Override
+    public MysteriousEgg copy() {
+        return new MysteriousEgg(this);
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/IkoriaLairOfBehemoths.java b/Mage.Sets/src/mage/sets/IkoriaLairOfBehemoths.java
index 76e1d5c2e3b..21f39aa766e 100644
--- a/Mage.Sets/src/mage/sets/IkoriaLairOfBehemoths.java
+++ b/Mage.Sets/src/mage/sets/IkoriaLairOfBehemoths.java
@@ -47,6 +47,7 @@ public final class IkoriaLairOfBehemoths extends ExpansionSet {
         cards.add(new SetCardInfo("Kogla, the Titan Ape", 162, Rarity.RARE, mage.cards.k.KoglaTheTitanApe.class));
         cards.add(new SetCardInfo("Migration Path", 164, Rarity.UNCOMMON, mage.cards.m.MigrationPath.class));
         cards.add(new SetCardInfo("Mosscoat Goriak", 167, Rarity.COMMON, mage.cards.m.MosscoatGoriak.class));
+        cards.add(new SetCardInfo("Mysterious Egg", 3, Rarity.COMMON, mage.cards.m.MysteriousEgg.class));
         cards.add(new SetCardInfo("Neutralize", 59, Rarity.UNCOMMON, mage.cards.n.Neutralize.class));
         cards.add(new SetCardInfo("Pacifism", 25, Rarity.COMMON, mage.cards.p.Pacifism.class));
         cards.add(new SetCardInfo("Phase Dolphin", 62, Rarity.COMMON, mage.cards.p.PhaseDolphin.class));