Killed a lot, no ring yet. Can lose invis against wall in the room to prepare for battle, but not if it is the named, only for ph. 65 necro with 50ish AAs unable to solo, he summons and hits 500s and quite fast. Can solo his ph with no problems, root rot / pet tanking. Duo'd twice with druid / necro, druid spam healing pet.
The cord is his common drop as far as I can tell. Killed him probabaly 8 times with no ring for my shaman yet. Lots of happy guildies sporting the belt though! Easy /afk camp, only need to kill his ph.
if you wanna just get there quick invis up to where he is, you can prep in the room outside his area and fight the mobs on the way to him or just invis and charge him he's in the little room alone.