You draw the life force from your opponent, gathering it to yourself and gaining a temporary boost of vitality.

Daily   ✦     Divine
Minor Action      Personal

Effect: You gain temporary hit points equal to one-half your level + your Wisdom modifier. If you have hit an enemy since the end of your last turn, you instead gain temporary hit points equal to your level + your Wisdom modifier.

Published in Player's Handbook 2, page(s) 115.