[Baalz]

I don't know for 100% sure, but (being the one referenced) over probably 150+ total game turns of testing my Kraken pretender never transformed. He was in a dominion-10 with high MR, so I suppose it might be possible. Since the results of that test a while ago I've sparingly used the amulet on things I thought wouldn't turn (undead, acquatic, etc) and haven't been surprised yet, though admittedly I don't use it often so that's not very scientific.