I would really love to see my favorite monster the umber hulk. They are cool for the following reasons:
1. They can burst out of walls/floors
2. They are huge
3. They cause confusion.
Confusion however is problematic because no one wants to lose control over their own character.
So... How it would work is that everyone would look like an umber hulk, friends and foes alike. If a player appears to be an umber hulk he can be damaged by other players who failed their save. Then let the players get confused if the are apt to be.![]()