Bonefiddle

An ethereal fiddle bow appears next to one creature that you can see within range. The fiddle bow immediately starts to “play” the bones of your target creature. Your target must make a Constitution save. If they fail, they take 2d8 slashing damage at the beginning of each of their turns for the duration. The target makes a Constitution save at the end of each of its turns to end the spell. The spell’s effects continue even if the target moves out of your line of sight or beyond the spell’s range. The spell ends if it enters an area of magical silence (such as the silence spell). The music produced by bonefiddle is hauntingly beautiful and harmonizes with your victim’s screams of pain

At Higher Levels. When you cast this spell with a spell slot of 3rd level or higher you increase the damage by 1d8 per spell level above 2nd.