Okay I'd love to get a few tips on the first transition phase for the Lich King. We're about there but it's a little sloppy.
Raid Compositon:
Tanks: Main tanking LK = Paladin, Off tanking adds = Death Knight
Healers: Shaman, Paladin & Holy Priest (Disc possibly better, not causing a problem)
Melee: Currently a little fluid because of work & other commitments but pick 2 from rogue, shaman, warrior & another rogue (we don't use 2 rogues at the same time)
Ranged: Warlock, Arcane Mage, Fire Mage (me, recent convert)
Most of our members are ICC25 geared with some heroic pieces thrown in too.
Phase 1: No problem at all. Shaman handles dispels onto the adds tanked by DK perfectly. We usually burn LK to 70% before more than 2 adds are spawned.
Transition:
Our pally tank originally had trouble picking up the Spirits quickly enough before they one shot the range. She now gets the first one pretty well but sometimes, I believe (though I could be wrong) she's getting silenced by Soul Shriek and is sometimes delayed in picking up the second or third. Does that happen to pally tanks?
Our DK is usually twiddling his thumbs at this stage, because he has nothing to do after the horror goes down. Should he getting involved? Is it viable to have the pally pick up the first Spirit and then have the DK pick up the second? One of our raid members said that the DK couldn't have anything on him going into Phase 2 but why would that be? It's the pally who has to go back to tanking the Lich King while we burn down the last Spirit.
(Personally I only switched to fire last night but with good results. During the transition I living bomb all the stuff out on the platform edge (and throw my pyros over there too) and then dps the ice spheres because I have a longer range with fire spells)