Every tank should have a last ditch, immune to death saving CD. This scenario kinda screams "use me" for that. Even if the MT dies, the shortest version of this is holmgang, which still lasts for 6 seconds for a WAR. Raise is 8. If your MT can't give you 2 extra seconds and use Holmgang to stall for the other 6, then you have another problem. Living dead is 10 seconds long, just like HG. This idea is meant to be last ditch effort, or simply to alleviate a healer from using their mana on it if the run is still going smoothly and 1 DPS falls.