Black Flame

You conjure a ball of ominous black flame and hurl it at a creature within range. Make a ranged spell attack against the target. On a hit, the target takes 4d8 fire damage and 2d8 necrotic damage. Additionally, the target is wreathed in lingering black flames. At the start of its next turn, it takes 1d8 necrotic damage unless it or another creature uses an action to extinguish the flame, which is CON save + your survival modifier.