diff --git a/Mage/src/main/java/mage/game/command/dungeons/UndercityDungeon.java b/Mage/src/main/java/mage/game/command/dungeons/UndercityDungeon.java
index 6c289a1509..611044d008 100644
--- a/Mage/src/main/java/mage/game/command/dungeons/UndercityDungeon.java
+++ b/Mage/src/main/java/mage/game/command/dungeons/UndercityDungeon.java
@@ -14,6 +14,7 @@ import mage.abilities.keyword.HexproofAbility;
 import mage.cards.Card;
 import mage.cards.Cards;
 import mage.cards.CardsImpl;
+import mage.constants.Duration;
 import mage.constants.Outcome;
 import mage.constants.Zone;
 import mage.counters.CounterType;
@@ -46,7 +47,7 @@ public class UndercityDungeon extends Dungeon {
         DungeonRoom secretEntrance = new DungeonRoom(
                 "Secret Entrance",
                 new SearchLibraryPutInHandEffect(
-                        new TargetCardInLibrary(StaticFilters.FILTER_CARD_BASIC_LAND)
+                        new TargetCardInLibrary(StaticFilters.FILTER_CARD_BASIC_LAND), true
                 )
         );
 
@@ -159,7 +160,7 @@ class ThroneOfTheDeadThreeEffect extends OneShotEffect {
             player.moveCards(card, Zone.BATTLEFIELD, source, game);
             Permanent permanent = game.getPermanent(card.getId());
             permanent.addCounters(CounterType.P1P1.createInstance(3), source, game);
-            game.addEffect(new GainAbilityTargetEffect(HexproofAbility.getInstance())
+            game.addEffect(new GainAbilityTargetEffect(HexproofAbility.getInstance(), Duration.UntilYourNextTurn)
                     .setTargetPointer(new FixedTarget(permanent, game)), source);
         }
         player.shuffleLibrary(source, game);