The Beastiarium – The Mimic Chest

Imagine that you are walking in a dungeon, with low health and suddenly you see a chest in a corner. You approach it thinking that you might find a potion or a weapon, but once you open it you find that the chest is actually a monster and you have to fight this enemy that probably kills your entire party. If this never happened to you I can assume that you are not a regular RPG gamer.