Circle of Vengeance

A burst of negative energy ripples out in a 15-foot radius sphere from a point within range you choose. Each living creature in that area must make a Constitution saving throw. A target takes 6d8 necrotic damage on a failed save and feels weary and sickened, suffering disadvantage on attacks. A successful save halves the damage and negates the sickening effect. A creature that failed the save can repeat it at the end of its turn, ending the condition on a success.

At Higher Levels: When you use a slot of higher level to cast the spell, the damage increases by 1d8 per slot higher than 5th.