Undead Stygian Dolls in Nightmare level
I've just made it to the Durance of Hate in the Nightmare difficulty level, and I am having just a devil of a time dealing with undead stygian dolls.
Every time I kill one, I lose, like, 200 life points. Instantly.
Is there a name for this particular "sore loser" power that the undead stygian dolls have? I didn't see any of the obvious effects that I usually see when I kill a creature that is cold-enchanted or fire-enchanted or lightning-enchanted and take damage from some kind of nova-looking blast. (Which are a lot easier for my character to withstand, since he's a barbarian and I've pumped up all his resistances to max.)
And more importantly, is there a good defense against it? Other than "drink another greater healing potion every time you're about to kill one"?