hc farming with 4 shaman and warrior tank

[Powerwar]

I use castsequence macros instead of click macros. This saves space on the action bars and allows several extra tricks.

Tank cast bar --> 1 - 9 = tanking macro
Tank cast bar --> 0 = Consecration

Ele shamans bar --> 2 - 3 = DPS macro
Ele shamans bar --> 4 = All shamans LHW the tank. This usually tops my tank in practically any situation.
Ele shamans bar --> 5 - 6 = DPS macro on 3 shamans and one shaman spams LHW on the tank. It's like healer, but since I usually use the 4 button for fast top on the tank this is only used in tricky fights where a dedicated healer and ocassional offhealer are needed.
Ele shamans bar --> 7 = Chain heal cast on the shaman itself as primary target or whatever the tank is targeting if it's friendly. This allows me to stay in AoE without any worry. One of this and the entire group is at 100%.
Ele shamans bar --> 8 = Same as before, but LHW
Ele shamans bar --> 9 = Same as before but with the big heal. This is a raid saver when the healers run oom in raids. I also raid with these shamans, so having the ability to keep the tank alive for a minute or two usually saves the day.
Ele shamans bar --> 0 = Thunderstorm

I usually run with a pala tank and 4 elemental shamans. In some situations I swap one of the shamans to healer... for example when grinding ICC trash for reputation.

Resto shaman cast bar --> 1 -2 = nothing
Resto shaman cast bar --> 3 - 6 = LHW the tank
Resto shaman cast bar --> 7 - 9 = same as the ele shamans.
Resto shaman cast bar --> 0 = Earthshield on the tank.