If we don't get too clever, Armageddon and obsidian gargoyles, which it doesn't affect, can destroy everyone in 5-6 turns.
I didn't quite understand. It's better to use gargoyles against the Boss, but ghosts will work against the Phoenix and the Devil.
If it starts looping, yes, that's a bug. I could easily implement a block with a simple check that would write "oh-oh-oh-cheater" and kick you out of the game. But I'm a good guy, and of course, I won't do that.
Thanks for the feedback!