This mechanic isn't broken in any fashion at all. It's simple and quite easy to avoid. Have you tank watch his song window, when it gets to Empowered Flames III -- have another tank taunt off and get aggro while he runs to the door that leads to Naggy's Lair. He'll need to stay there til the debuff fades, rinse/repeat - 0 tank deaths. This is what we'd call an avoidable punishment mechanic, not a broken one. It's just a matter of paying attention That aside. 4 or 5 runs now, 0 augs and 0 cloaks -- sure looking forward to seeing 20 more Druid staffs though.