Divine Sacrifice

You can sacrifice life force to increase the damage you deal. When you cast the spell, you can sacrifice up to 10 of your hit points. For every 2 HP you sacrifice, on your next successful attack you deal +1d6 damage, to a maximum of +5d6 on that attack. Your ability to deal this extra damage ends when you successfully attack or when the spell duration ends. Sacrificed hit points count as non-lethal damage, even if you have the regeneration ability. If you only have 1 HP remaining, you will stay at 1 HP even if you use this spell.

Once you reach 7th level, for every 2 HP you sacrifice, you will deal +2d6 damage to a maximum of 10d6 on that attack.