Malignant Sustenance
Focus 4UncommonClericNecromancyNegativeSource Core Rulebook pg. 394 2.0Domain undeathCast 
somatic,
verbalRange touch;
Targets 1 willing undead creature
Duration 1 minute
You embed a seed of negative energy in an undead creature, restoring its unnatural vigor. The target gains fast healing 7. This healing comes from negative energy, so it heals the undead rather than damaging it.
Heightened (+1) The fast healing increases by 2.