Dark Nova

You conjure a volatile sphere of shadowfire and launch it at a target within range. The target must make a Dexterity saving throw. On a failed save, they take 5d6 force damage, or half as much on a successful save.

Dark Burn: If the target is below its hit point maximum, it takes an additional 1d6 necrotic damage.

Higher Levels. When cast using a spell slot of 4th level or higher, the damage increases by 1d6 force damage per spell level above 3rd