Two promo cards for Boss Monster included in the Overboss: A Boss Monster Adventure – Limited Edition Bonus Pack. These two cards can be used in any of the Boss Monster base sets. Cards included are: The Collective (Boss) - After Leveling Up: For the rest of the game, once per turn, you may remove a face-down hero in your scorekeeping area from the game to give a Room +5 until end of turn. Overworld Gate (Advanced Trap Room) - When you build this room, if it is leftmost Room of your dungeon, you may choose one Epic Hero in town and place it at the entrance to your dungeon.