Blasphemous Act

Crimson energy flows from your body in a 20ft radius centered on you, mutilating everyone within range. Creatures within range must succeed on a constitution saving throw or take 13d10 slashing damage and half as much on a successful save. You may reduce the level spell slot that you expend to cast this spell by 1 for every creature within 20ft of you to a minimum of a 1st-level spell slot.