Out of curiosity, how much are you using the Flame Shock + Lava burst combo? I haven't leveled my shamans yet so I don't know, but I also play a seperate elemental shaman for raiding. Been toying with the idea of mass purging a couple of targets, hit flame shocks on one target and then switching to another for LB's, then before Flame shocks run down lava bursting the focus target with the Dots on it. I'd figure most flame shock DOT would be healed through, but the Lava burst + a quick 5 Earth shocks would seem pretty good for dropping them, if they weren't hit with anything to stop it.