Crown of pain

Seven spine like motes of necrotic energy appear and orbit your head until the spell ends. You can use a bonus action to send one of the motes streaking toward one creature or object within 360 feet of you. When you do so, make a ranged spell attack. On a hit. the target takes 4d12 necrotic damage. Whether you hit or miss, the mote is expended. The spell ends early if you expend the last mote. while spell is active you have advantage on con saves.