We've killed this guy twice before with minimal issues. The shaman just wards through his multiattacks. Tonight he kept healing from the adds, and every time he did his I help you Die/Rip rip rip/Drink deeply combo the tank would get one-shotted by an 60-80k attack that did not seem to be thwarted by wards even though it wasnt focus damage. I am looking through the logs and it just looks like he's debuffing noxious. Did we miss anything obvious?
