One of their spells hits for 242. Even when they start conning green, they can still put a hurtin' on someone.
Best way I found to kill them, at least until you can resist their spells, is to DOT and run. they can't cast while running.
A pure melee would have a lot of trouble with them and they aren't really worth the aggrivation.

Bronze Shortened Spear
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Solusek Goblin Skin
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