Just roll Undead DK's for the extra healing?[*]Death Coil - Unleashes all runic power you have, causing up to 600 Shadow Damage (at level 55) to a non-undead enemy, or healing up to 900 damage to a friendly undead target.[*]Death Pact - Instantly kills a raised ghoul to heal the Death Knight.


Even if they aren't primary healers, it's still possible to 5 box them. It'd be an interesting choice to try.