Dark Sprite

You trace a dark death sigil in the air (either with your hands, a wand, or a staff), summoning a dark sprite resembling a pixie embodying necrotic magic in an unoccupied space you can see within 15 feet of you. When the sprite appears, you choose a direction for it to face. Flip a coin; If Heads, the dark sprite flutters around a single target within 15 feet enforcing dark magic upon the target, dealing 1d10+1 necrotic damage on a hit. If Tails, the dark sprite flutters around a single target within 15 feet enforcing dark magic upon the target, dealing 1d6+1 necrotic damage on a hit. The dark sprite dissipates immediately after the attack. The dark sprite is a magical effect and not a creature.