Man, the Rotten absolutely kicks my team to the kerb every time. Endless reinforcements and -1 go to every one of my people, every time, is too much. By the time it's dead I've got a bunch of 2hp heroes facing 10+ Imps and Bones.
Maybe its -1hp thing could go on a side or two, instead of just happening? Or maybe the -max HP thing could be a condition that can be entirely reversed with Cleanse? IDK, it just feels a bit OP currently.
Other than the Rotten though, I love this game!