Just killed him last night for the first time. WOW! The rest of the instance was a breeze! This was the hardest boss.

As for the tombs - I didn't use a macro, fire elementals, or magma totems. I just targeted them with my pally and had the boys blow it up. Running UP over and over to get my last two tanking pieces helped. Targetting the ghosties in that first fight is the same as the tombs in this fight.

AWESOME idea about the shadow aura!
It was a gear thing though. Now that I broke 535, I haven't needed to spam heal like mad. Man am I amped that I can now run heroics!