Lifeshaver (3.5e Sacrifice)

With a standard action you may make a melee attack against a creature, declaring it to be a Lifeshaver attack. If you strike and deal damage, then you deal an additional 2d6 Con damage against the opponent as your weapon rips into their life force and shreds it apart. If you miss, the hp expended is still used up and the Lifeshaver is wasted.

Health Cost: -17.