I think these guys are wizards. We were fighting there last night and it cast a spell that said "Soandso's skin ignites" and "Soandso's skin freezes over". He dropped like a rock so it doesn't really matter
Aye us wizards go drop very quickly and this guy is definatly a wizard. No need to worry if you get your magic res about 65 or above though, he was never able to hit me with his spells and my res was 62.