Took him with 51 Cleric, 54 Bard, 55 Druid and 57 Pally. Was a long tough fight with the Druid taking healing duty for a bit while the Cleric medded. Probably took 10 minutes but we were always in the safe zone. Dropped the ring.
We fought him today. He was blue to me at 55. One well balanced group is all we had and we took him down (the second time =P) He has a lot of HP and pretty decent resists. Hardest hit was for 170-180 but slowable. Only thing he dropped was beer goggles and a mage spell.