This guy actually reminded me a bit of Fennin. Like Fennin, placment i think has a lot to do with your victory. And not neccessarilly where you place the mob. Anyway , he is a tuff fight , and the build up to get to him is a task also . His AE can hurt, sucking down mana , and hitting incredibly hard with melee. Should be easy to get a hold of with minimal adds, or none at all. All in all , like many higher end encounters, anything can go wrong , so always be prepared. If things are in your favor, and every one does their part, the encounter seems to jus flow.
Oh yeah , p.s. try to make sure the croc doesnt spawn on ya in between killing the last ring, and heading to MaoE. It can put a damper on your raid.

Aegis of the Earth
Cloak of Flickering Flame
Earring of Living Earth