Did this one on heroic and really didn't have trouble. Shamans have ~10.2k hp unbuffed (4 shamans) from pvp gear which is helpful I suppose, but there's two clouds on heroic so that's a challenge I guess. I don't use follow for this fight though, I use strafe on all four toons which gets them out of the clouds easily. I roll with a warrior spec'd into arms who sometimes puts on a shield to D up when needed. This boss dies very fast though.