diff --git a/Mage.Sets/src/mage/cards/p/PollutedCisternDimOubliette.java b/Mage.Sets/src/mage/cards/p/PollutedCisternDimOubliette.java
new file mode 100644
index 00000000000..747c2a46bb0
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/p/PollutedCisternDimOubliette.java
@@ -0,0 +1,153 @@
+package mage.cards.p;
+
+import mage.abilities.Ability;
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.common.UnlockThisDoorTriggeredAbility;
+import mage.abilities.dynamicvalue.DynamicValue;
+import mage.abilities.effects.Effect;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.LoseLifeOpponentsEffect;
+import mage.abilities.effects.common.MillCardsControllerEffect;
+import mage.cards.Card;
+import mage.cards.CardSetInfo;
+import mage.cards.RoomCard;
+import mage.constants.Outcome;
+import mage.constants.Zone;
+import mage.filter.StaticFilters;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.events.ZoneChangeGroupEvent;
+import mage.players.Player;
+import mage.target.TargetCard;
+import mage.target.common.TargetCardInYourGraveyard;
+
+import java.util.Collection;
+import java.util.Set;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class PollutedCisternDimOubliette extends RoomCard {
+
+    public PollutedCisternDimOubliette(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, "{1}{B}", "{4}{B}");
+
+        // Polluted Cistern
+        // Whenever one or more cards are put into your graveyard from your library, each opponent loses 1 life for each card type among those cards.
+        this.getLeftHalfCard().addAbility(new PollutedCisternTriggeredAbility());
+
+        // Dim Oubliette
+        // When you unlock this door, mill three cards, then return a creature card from your graveyard to the battlefield.
+        Ability ability = new UnlockThisDoorTriggeredAbility(new MillCardsControllerEffect(3), false, false);
+        ability.addEffect(new DimOublietteEffect());
+        this.getRightHalfCard().addAbility(ability);
+    }
+
+    private PollutedCisternDimOubliette(final PollutedCisternDimOubliette card) {
+        super(card);
+    }
+
+    @Override
+    public PollutedCisternDimOubliette copy() {
+        return new PollutedCisternDimOubliette(this);
+    }
+}
+
+class PollutedCisternTriggeredAbility extends TriggeredAbilityImpl {
+
+    private enum PollutedCisternValue implements DynamicValue {
+        instance;
+
+        @Override
+        public int calculate(Game game, Ability sourceAbility, Effect effect) {
+            Set<Card> cards = (Set<Card>) effect.getValue("cards");
+            return cards != null
+                    ? cards
+                    .stream()
+                    .map(card -> card.getCardType(game))
+                    .flatMap(Collection::stream)
+                    .distinct()
+                    .mapToInt(x -> 1)
+                    .sum()
+                    : 0;
+        }
+
+        @Override
+        public PollutedCisternValue copy() {
+            return this;
+        }
+
+        @Override
+        public String getMessage() {
+            return "";
+        }
+
+        @Override
+        public String toString() {
+            return "1";
+        }
+    }
+
+    PollutedCisternTriggeredAbility() {
+        super(Zone.BATTLEFIELD, new LoseLifeOpponentsEffect(PollutedCisternValue.instance)
+                .setText("each opponent loses 1 life for each card type among those cards"));
+        this.setTriggerPhrase("Whenever one or more cards are put into your graveyard from your library, ");
+    }
+
+    private PollutedCisternTriggeredAbility(final PollutedCisternTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public PollutedCisternTriggeredAbility copy() {
+        return new PollutedCisternTriggeredAbility(this);
+    }
+
+    @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 (!Zone.GRAVEYARD.match(zEvent.getToZone())
+                || !Zone.LIBRARY.match(zEvent.getFromZone())
+                || !isControlledBy(zEvent.getPlayerId())) {
+            return false;
+        }
+        this.getAllEffects().setValue("cards", zEvent.getCards());
+        return true;
+    }
+}
+
+class DimOublietteEffect extends OneShotEffect {
+
+    DimOublietteEffect() {
+        super(Outcome.Benefit);
+        staticText = ", then return a creature card from your graveyard to the battlefield";
+    }
+
+    private DimOublietteEffect(final DimOublietteEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public DimOublietteEffect copy() {
+        return new DimOublietteEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(source.getControllerId());
+        if (player == null || player.getGraveyard().count(StaticFilters.FILTER_CARD_CREATURE, game) < 1) {
+            return false;
+        }
+        TargetCard target = new TargetCardInYourGraveyard(StaticFilters.FILTER_CARD_CREATURE_YOUR_GRAVEYARD);
+        target.withNotTarget(true);
+        player.choose(outcome, target, source, game);
+        Card card = game.getCard(target.getFirstTarget());
+        return card != null && player.moveCards(card, Zone.BATTLEFIELD, source, game);
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/DuskmournHouseOfHorrorCommander.java b/Mage.Sets/src/mage/sets/DuskmournHouseOfHorrorCommander.java
index 691e9746422..2dd3255ec37 100644
--- a/Mage.Sets/src/mage/sets/DuskmournHouseOfHorrorCommander.java
+++ b/Mage.Sets/src/mage/sets/DuskmournHouseOfHorrorCommander.java
@@ -219,6 +219,7 @@ public final class DuskmournHouseOfHorrorCommander extends ExpansionSet {
         cards.add(new SetCardInfo("Persistent Constrictor", 52, Rarity.RARE, mage.cards.p.PersistentConstrictor.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Phenomenon Investigators", 38, Rarity.RARE, mage.cards.p.PhenomenonInvestigators.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Phenomenon Investigators", 65, Rarity.RARE, mage.cards.p.PhenomenonInvestigators.class, NON_FULL_USE_VARIOUS));
+        cards.add(new SetCardInfo("Polluted Cistern // Dim Oubliette", 23, Rarity.RARE, mage.cards.p.PollutedCisternDimOubliette.class));
         cards.add(new SetCardInfo("Ponder", 73, Rarity.COMMON, mage.cards.p.Ponder.class));
         cards.add(new SetCardInfo("Portent", 74, Rarity.COMMON, mage.cards.p.Portent.class));
         cards.add(new SetCardInfo("Primordial Mist", 123, Rarity.RARE, mage.cards.p.PrimordialMist.class));