[EbeneezerAl]

Oh, those. Each of them has a weakness to a different element or in one case, physical attacks. As soon as you hit one of them, they all swap. Just keep swinging and eventually you'll hit it enough times to kill it. I don't remember what attacks it uses, but if it hits physically, use the golem summon.

And don't cast a spell on all. You get hit with it again from the ones who aren't weak to it if I remember right.