Divine Sacrifice

(Spell Compendium, page 70, DnD 3.5)

Evocation

Level: ; Blackguard 1; Paladin 1
Components: V, S
Casting Time: 1 standard action
Range: Personal
Target: You
Duration: 1 round/level

Giving up some of your life force to win the battle, you empower your next blow against your foe.

Your first attack each round for the duration of the spell deals an extra 5d6 points of damage if it hits, and you take 10 points of damage each time you make such an attack, whether or not the attack is successful.