[gravator]

A prize map (indicated with the letter P) that's a rare drop like brutal maps, but when you enter it there are several closed off rooms like the haunted houses, every time you finish a room you can move to the next room, on until you reach the last room where you can open a chest (similar to the three chest event) and get a reward of a few diamonds, gems, money or alchemy ingredients.

Just tossing this idea out there.