So if the only surefire way to heal DRK from 1 HP to Full HP is WHM benediction, then the DRK is not only reliant on a WHM being in the party, but also on said WHM to have benediction ready and not have to wait on recast. So this sounds like it has to be a perfect condition again. Maybe I'm wrong, but it seems like if you are expecting the DRK to take enough damage to kill it, making living dead useful, then perhaps things are not going so well in the fight and their is a big chance that WHM has already used benediction. Seems like DRK living dead requires too much pre-planning to be worth using at all.