This is a great chance for people who missed out on Anererak (the boss) to get him. (Before this, he only appeared in the "alpha" printing of Boss Monster.) Beyond that, this offers one new room of each of the four basic treasure types to experiment with and make your dungeon deck better! My gaming group loves the "Wight House" card and, eventually, I decided to order a second copy of this so we could have two of each of these rooms in our deck. Definately recommended for anyone who plays Boss Monster!