Badly needs a replay or at least a game log of games after they end. I'm wondering how an arena opponent summoned 20+ orbs of creatures in one turn onto an empty board when I find out my health just dropped from 13 to 0.

Unfair and unfun. Bosses will show up anywhere. You can't turn it off without installing. Missions will become pure RNG no matter what you do, due to overbalanced bosses that can spawn during already-difficult missions as easily as they spawn in cakewalks. I got this for free, and I'm uninstalling it.