Killed him with ml9 ench. First kill all purple mobs around than start to attack him. He casts weak thunderdds on everybody around and if the purple mobs repawn they will add in the fight. But alltogether an easy fight.
i was just in there with a pug farming xp and we figured we would try it seeing as there wasnt much description about except he was weak...
first off, you get ported all around the room(seems to be random). just a tip.. kill ALL the mobs around him before you start they will all add. we failed but at least i can warn someone else about this :P