Encountered a few variations on this - basically it's about having 3x physical dps including MS, with extremely high burst damage. Harsh - my 4 shammies can't outheal even the sustained dps, so not really sure what to do.. Blasting them might be an idea, but my healer will be dead after I kill one of them, and my chances against 2x dps and 2x healer without my own healer, are pretty slim.