When you are raid geared, elemental shamans rarely run out of mana. I only raid with one shaman, and I only have mana issues if I die and ankh, or get battle rezzed. Between water shield, blessing of wisdom, replenishment, and thunderstorm, raiding shaman have tons of regen. Plus, in many fights, there's an Add, or something else to hit, so chain lightning is "free" extra DPS.

Nice job guys. What's next on the list? going to hit up Rotface/Festergut? or maybe Dreamwalker?