I think I got it!!!
[Sblock=Wrathful Healing]This enchantment can only be placed on a melee weapon, creating positive energy that flows to its wielder. When the weapons deals damage to a creature, the wielder heals a number of hit points equal to half the damage dealt. If the wielder already has full hit points, there is no effect. Because the weapon channels positive energy, it damages an undead wielder instead.
Caster Level: 15th; Prerequisites: Craft Magic Arms and Armor, regenerate; Market Price: +3 bonus.[/sblock]
Darimaus, is this an acceptable weapon enchantment? It comes from the Enemies & Allies, the page 20 sidebar.
You state any WoTC hardcover.
-Blood