My wife and I have killed him several times as this is our favorite spot to hunt. We duo as 61 Enchanter and 58 Cleric. I charm a dragorn and have him beat up Wersin while she heals pets. Be careful as he will summon and gate - so nuke at 50%. He is a healer also - cannot be stunned. He will not cast if he is running - so do not root at the end.
Killed him three times now with my fathers 66 pally, a 65 shaman hydra, and my 64 druid. Dropped the mask twice and a +10 attack no drop aug the other.
65 War, 65 Druid duo... snare the add... succor to zone... invis up, go back and kill add, then pull and kill the named. Lots of HP's for a duo, hits for 400ish but likes to cast a lot.
He is easy. One group took him down in about 20 seconds. He was in the first left hall after you go through the zone in room with 4 dragon commoners. SK pulled, FD tagged and bang. He had 2 others dragon people with him at the time.