Enervative Healing
(Races of Faerun, page 163, DnD 3.0)
[General]
You can use the life energy of an opponent to heal yourself.
Prerequisite
Fey'ri, ability to use enervation as a spell-like ability
Benefit
When you use your enervation ability, you may choose to touch an opponent instead of firing a ray, making a melee touch attack to do so. If the target gains negative levels, you heal 5 hit points for every negative level the target gains from this attack as if you had been healed with positive energy.