I'm a level 35 shaman, and was talking with a level 34 druid when we decided to try and take this sucker on.
He resisted every snare, every malice, and almost every root, and the only thing he seemed to take without much complaining were DoTs. Took both me and the druid down to almost out of mana and almost out of life before the sucker bit the dust. Moral of the story: Buff up and be prepared to either melee hard or DoT.