Hey, just wanna share my experience w/ Ultraxion as Disc. So much funnnn! We had our first try on him last night, deciding to two heal it... me as Disc priest and my colleague as Resto Druid. Unfortunately his internet started freaking out at the start of the fight... so it was decided that I would take the red crystal, he the green, and then me on the blue again. After teaching people how to press their freaking button, we got a proper attempt and killed it np.
Healing was nuts. Was spamming like a mofo after getting blue... unfortunately for the druid his MS went up to 3k or something... so after the fight I had a sustained 51,000 HPS for 70% of the healing done w/ 38% going to DA and 38% going to PoH. lol :} Could basically solo heal that fight.
I run heavy mastery (52%), high haste (1400rating + running w/ a shadow priest), and average/low crit.
EDIT: no WoL unfortunately cause we don't run it on normals :<