No faction hit for killing this guy, as of 12-17-2007.
Max hit on me (1500AC) was around 130; very high resists. Couldn't land a snare on him to save my life, nor a slow.. (I play a ranger, tried to slow using swarmcaller and it wouldn't land)
Overall, pretty easy kill. Heals himself about 60 times with superior healing around 50% health, so he takes a while to kill... I'd guess he's around 35k hp, but I'd have to check my logs to be sure.
Worth 4% AA at level 65.