It's phase one until 65%. Phase one is the wand phase, in which we dps very slowly. Reason being, Ony likes to turn and WTFPWN people. Also note that Knock Away will lower the tank's threat, causing her to turn and WTFPWN people.

Ony is cake, but you have to treat her right to keep the threat where you want it.

Oh, and your priest should spam fade. If you're not spamming fade, why are you not spamming fade? Spam fade.