Onyxia

[Onan]

IIRC we always have a second tank buillding aggro behind the MT, just incase we loose one, if we do loose a tank we have about a 50% chance of recovering. The best answer is of course to not loose your tank. Now in our experience if we can keep the DPS pressure on she fears far less often. Which makes for a very smooth run. I'm not sure exactly what the MT does, but as Ony is landing in phase 2-3, the MT hits her with a few sunders, as rend etc... once she is under control and at the north side DPS goes on almost immediately, full on.

As a priest in phase 3, I always target the MT as soon as I get feared and go directly to heal the MT when I recover, if the MT is under 2K I shield, otherwise I flash to 50% and go for a bigger heal, self heal (if i need to) or start regening if I am LoM. Don't forget to have a Pally JoW her, the wanders can regen a lot of mana that way (the extra DPS also helps with fears), make sure there is communication between healers on who is regening and who is in. We tipically go with a FFA healing rotation, which means there is no set rotation but try not to blow your wad, and trust your friends. Another personal favorite is the Dreamless Sleep potion, since you are asleep after you use it you don't move while feared (thus take no damage from fissures) use it with caution though as you cannot choose to break the sleep. As a healer, I only go to about 100 unbuffed FR, I find the Mana and regen I loose by going full out FR hurts too much. I think every priest that comes with us has "Unbreakable Will" at 5 points.

You may know some or all of this info, but thats what I have to offer.