diff --git a/Mage.Sets/src/mage/cards/u/UnshakableTail.java b/Mage.Sets/src/mage/cards/u/UnshakableTail.java
new file mode 100644
index 000000000000..122fb51a88ce
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/u/UnshakableTail.java
@@ -0,0 +1,143 @@
+package mage.cards.u;
+
+import java.util.UUID;
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.common.SimpleActivatedAbility;
+import mage.abilities.costs.common.SacrificeTargetCost;
+import mage.abilities.costs.mana.ManaCostsImpl;
+import mage.abilities.effects.common.ReturnSourceFromGraveyardToHandEffect;
+import mage.abilities.effects.keyword.InvestigateEffect;
+import mage.abilities.effects.keyword.SurveilEffect;
+import mage.cards.Card;
+import mage.constants.SubType;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Zone;
+import mage.filter.StaticFilters;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.events.ZoneChangeGroupEvent;
+
+/**
+ *
+ * @author kleese
+ */
+public final class UnshakableTail extends CardImpl {
+
+    public UnshakableTail(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{2}{B}");
+        
+        this.subtype.add(SubType.ZOMBIE);
+        this.subtype.add(SubType.DETECTIVE);
+        this.power = new MageInt(3);
+        this.toughness = new MageInt(2);
+
+        // When Unshakable Tail enters the battlefield and at the beginning of your upkeep, surveil 1.
+        this.addAbility(new UnshakableTailSurveilTriggeredAbility());
+
+        // Whenever one or more creature cards are put into your graveyard from your library, investigate.
+        this.addAbility(new UnshakableTailInvestigateTriggeredAbility());
+
+        // {2}, Sacrifice a Clue: Return Unshakable Tail from your graveyard to your hand.
+        Ability ability = new SimpleActivatedAbility(
+                Zone.GRAVEYARD, new ReturnSourceFromGraveyardToHandEffect(), new ManaCostsImpl<>("{2}")
+        );
+        ability.addCost(new SacrificeTargetCost(StaticFilters.FILTER_CONTROLLED_CLUE));
+        this.addAbility(ability);
+    }
+
+    private UnshakableTail(final UnshakableTail card) {
+        super(card);
+    }
+
+    @Override
+    public UnshakableTail copy() {
+        return new UnshakableTail(this);
+    }
+}
+
+class UnshakableTailSurveilTriggeredAbility extends TriggeredAbilityImpl {
+
+    UnshakableTailSurveilTriggeredAbility() {
+        super(Zone.BATTLEFIELD, new SurveilEffect(1));
+    }
+
+    private UnshakableTailSurveilTriggeredAbility(final UnshakableTailSurveilTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public UnshakableTailSurveilTriggeredAbility copy() {
+        return new UnshakableTailSurveilTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.ENTERS_THE_BATTLEFIELD
+                || event.getType() == GameEvent.EventType.UPKEEP_STEP_PRE;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        if (event.getType() == GameEvent.EventType.ENTERS_THE_BATTLEFIELD) {
+            return event.getTargetId().equals(getSourceId());
+        }
+        return game.isActivePlayer(getControllerId());
+    }
+
+    @Override
+    public String getRule() {
+        return "When {this} enters the battlefield and at the beginning of your upkeep, surveil 1.";
+    }
+}
+
+class UnshakableTailInvestigateTriggeredAbility extends TriggeredAbilityImpl {
+
+    public UnshakableTailInvestigateTriggeredAbility() {
+        super(Zone.BATTLEFIELD, new InvestigateEffect(), false);
+    }
+
+    private UnshakableTailInvestigateTriggeredAbility(final UnshakableTailInvestigateTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.ZONE_CHANGE_GROUP;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        ZoneChangeGroupEvent zEvent = (ZoneChangeGroupEvent) event;
+        if (zEvent != null
+                && Zone.LIBRARY == zEvent.getFromZone()
+                && Zone.GRAVEYARD == zEvent.getToZone()
+                && zEvent.getCards() != null) {
+            for (Card card : zEvent.getCards()) {
+                if (card != null) {
+                    UUID cardOwnerId = card.getOwnerId();
+                    if (cardOwnerId != null
+                            && card.isOwnedBy(getControllerId())
+                            && card.isCreature(game)) {
+                        return true;
+                    }
+                }
+
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public UnshakableTailInvestigateTriggeredAbility copy() {
+        return new UnshakableTailInvestigateTriggeredAbility(this);
+    }
+
+    @Override
+    public String getRule() {
+        return "Whenever one or more creature cards are put into your graveyard from your library, investigate.";
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/MurdersAtKarlovManorCommander.java b/Mage.Sets/src/mage/sets/MurdersAtKarlovManorCommander.java
index 1b9927585e89..b5817254d910 100644
--- a/Mage.Sets/src/mage/sets/MurdersAtKarlovManorCommander.java
+++ b/Mage.Sets/src/mage/sets/MurdersAtKarlovManorCommander.java
@@ -278,6 +278,7 @@ private MurdersAtKarlovManorCommander() {
         cards.add(new SetCardInfo("Twilight Prophet", 143, Rarity.MYTHIC, mage.cards.t.TwilightProphet.class));
         cards.add(new SetCardInfo("Ugin's Mastery", 53, Rarity.RARE, mage.cards.u.UginsMastery.class));
         cards.add(new SetCardInfo("Ulvenwald Mysteries", 193, Rarity.UNCOMMON, mage.cards.u.UlvenwaldMysteries.class));
+        cards.add(new SetCardInfo("Unshakable Tail", 29, Rarity.RARE, mage.cards.u.UnshakableTail.class));
         cards.add(new SetCardInfo("Vengeful Ancestor", 163, Rarity.RARE, mage.cards.v.VengefulAncestor.class));
         cards.add(new SetCardInfo("Vizier of Many Faces", 123, Rarity.RARE, mage.cards.v.VizierOfManyFaces.class));
         cards.add(new SetCardInfo("Vow of Duty", 89, Rarity.UNCOMMON, mage.cards.v.VowOfDuty.class));