diff --git a/Mage.Sets/src/mage/cards/c/CrampedVentsAccessMaze.java b/Mage.Sets/src/mage/cards/c/CrampedVentsAccessMaze.java
new file mode 100644
index 00000000000..acf6f770fb8
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/c/CrampedVentsAccessMaze.java
@@ -0,0 +1,169 @@
+package mage.cards.c;
+
+import mage.MageIdentifier;
+import mage.MageObjectReference;
+import mage.abilities.Ability;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.common.UnlockThisDoorTriggeredAbility;
+import mage.abilities.costs.Costs;
+import mage.abilities.costs.CostsImpl;
+import mage.abilities.costs.common.PayLifeCost;
+import mage.abilities.effects.AsThoughEffectImpl;
+import mage.abilities.effects.OneShotEffect;
+import mage.cards.Card;
+import mage.cards.CardSetInfo;
+import mage.cards.RoomCard;
+import mage.constants.*;
+import mage.game.Controllable;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+import mage.target.common.TargetOpponentsCreaturePermanent;
+import mage.util.CardUtil;
+import mage.watchers.Watcher;
+
+import java.util.HashSet;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class CrampedVentsAccessMaze extends RoomCard {
+
+    public CrampedVentsAccessMaze(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, "{3}{B}", "{5}{B}{B}");
+
+        // Cramped Vents
+        // When you unlock this door, this Room deals 6 damage to target creature an opponent controls. You gain life equal to the excess damage dealt this way.
+        Ability ability = new UnlockThisDoorTriggeredAbility(new CrampedVentsEffect(), false, true);
+        ability.addTarget(new TargetOpponentsCreaturePermanent());
+        ability.addWatcher(new AccessMazeWatcher());
+        this.getLeftHalfCard().addAbility(ability);
+
+        // Access Maze
+        // Once during each of your turns, you may cast a spell from your hand by paying life equal to its mana value rather than paying its mana cost.
+        this.getRightHalfCard().addAbility(new SimpleStaticAbility(new AccessMazeEffect())
+                .setIdentifier(MageIdentifier.AccessMazeWatcher));
+    }
+
+    private CrampedVentsAccessMaze(final CrampedVentsAccessMaze card) {
+        super(card);
+    }
+
+    @Override
+    public CrampedVentsAccessMaze copy() {
+        return new CrampedVentsAccessMaze(this);
+    }
+}
+
+class CrampedVentsEffect extends OneShotEffect {
+
+    CrampedVentsEffect() {
+        super(Outcome.Benefit);
+        staticText = "{this} deals 6 damage to target creature an opponent controls. " +
+                "You gain life equal to the excess damage dealt this way.";
+    }
+
+    private CrampedVentsEffect(final CrampedVentsEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public CrampedVentsEffect copy() {
+        return new CrampedVentsEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Permanent permanent = game.getPermanent(getTargetPointer().getFirst(game, source));
+        if (permanent == null) {
+            return false;
+        }
+        int excess = permanent.damageWithExcess(6, source, game);
+        if (excess > 0) {
+            Optional.ofNullable(source)
+                    .map(Controllable::getControllerId)
+                    .map(game::getPlayer)
+                    .ifPresent(player -> player.gainLife(excess, game, source));
+        }
+        return true;
+    }
+}
+
+class AccessMazeEffect extends AsThoughEffectImpl {
+
+    AccessMazeEffect() {
+        super(AsThoughEffectType.CAST_FROM_NOT_OWN_HAND_ZONE, Duration.WhileOnBattlefield, Outcome.PlayForFree);
+        staticText = "once during each of your turns, you may cast a spell from your hand " +
+                "by paying life equal to its mana value rather than paying its mana cost";
+    }
+
+    private AccessMazeEffect(final AccessMazeEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public AccessMazeEffect copy() {
+        return new AccessMazeEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        return true;
+    }
+
+    @Override
+    public boolean applies(UUID objectId, Ability source, UUID affectedControllerId, Game game) {
+        if (!source.isControlledBy(affectedControllerId) || !game.isActivePlayer(source.getControllerId())) {
+            return false;
+        }
+        Player controller = game.getPlayer(source.getControllerId());
+        Permanent sourceObject = game.getPermanent(source.getSourceId());
+        Card card = game.getCard(CardUtil.getMainCardId(game, objectId));
+        if (controller == null || card == null || sourceObject == null
+                || !Zone.HAND.match(game.getState().getZone(card.getId()))
+                || AccessMazeWatcher.isAbilityUsed(new MageObjectReference(sourceObject, game), game)) {
+            return false;
+        }
+        Costs costs = new CostsImpl();
+        costs.add(new PayLifeCost(card.getManaValue()));
+        controller.setCastSourceIdWithAlternateMana(
+                source.getSourceId(), null, costs, MageIdentifier.AccessMazeWatcher
+        );
+        return true;
+    }
+}
+
+class AccessMazeWatcher extends Watcher {
+
+    private final Set<MageObjectReference> usedFrom = new HashSet<>();
+
+    public AccessMazeWatcher() {
+        super(WatcherScope.GAME);
+    }
+
+    @Override
+    public void watch(GameEvent event, Game game) {
+        if (event.getType() == GameEvent.EventType.SPELL_CAST
+                && event.hasApprovingIdentifier(MageIdentifier.AccessMazeWatcher)) {
+            usedFrom.add(event.getApprovingObject().getApprovingMageObjectReference());
+        }
+    }
+
+    @Override
+    public void reset() {
+        super.reset();
+        usedFrom.clear();
+    }
+
+    static boolean isAbilityUsed(MageObjectReference mor, Game game) {
+        return game
+                .getState()
+                .getWatcher(AccessMazeWatcher.class)
+                .usedFrom
+                .contains(mor);
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/DuskmournHouseOfHorrorCommander.java b/Mage.Sets/src/mage/sets/DuskmournHouseOfHorrorCommander.java
index 2dd3255ec37..ad542444fdd 100644
--- a/Mage.Sets/src/mage/sets/DuskmournHouseOfHorrorCommander.java
+++ b/Mage.Sets/src/mage/sets/DuskmournHouseOfHorrorCommander.java
@@ -78,6 +78,7 @@ public final class DuskmournHouseOfHorrorCommander extends ExpansionSet {
         cards.add(new SetCardInfo("Convert to Slime", 37, Rarity.RARE, mage.cards.c.ConvertToSlime.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Convert to Slime", 64, Rarity.RARE, mage.cards.c.ConvertToSlime.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Counterspell", 114, Rarity.UNCOMMON, mage.cards.c.Counterspell.class));
+        cards.add(new SetCardInfo("Cramped Vents // Access Maze", 17, Rarity.RARE, mage.cards.c.CrampedVentsAccessMaze.class));
         cards.add(new SetCardInfo("Crawling Sensation", 173, Rarity.UNCOMMON, mage.cards.c.CrawlingSensation.class));
         cards.add(new SetCardInfo("Crypt Ghast", 368, Rarity.MYTHIC, mage.cards.c.CryptGhast.class));
         cards.add(new SetCardInfo("Culling Ritual", 85, Rarity.RARE, mage.cards.c.CullingRitual.class));
diff --git a/Mage/src/main/java/mage/MageIdentifier.java b/Mage/src/main/java/mage/MageIdentifier.java
index b77e0025b4e..73a85dba09f 100644
--- a/Mage/src/main/java/mage/MageIdentifier.java
+++ b/Mage/src/main/java/mage/MageIdentifier.java
@@ -39,6 +39,7 @@ public enum MageIdentifier {
     ThundermanDragonWatcher,
     LockeTreasureHunterWatcher,
     TheFourthDoctorWatcher,
+    AccessMazeWatcher,
 
     // ----------------------------//
     //       alternate casts       //