Visceral Needle

Uttering a word of dark power, you shatter a bone into a cloud of tiny needles, and send them flying into the target. Make a ranged spell attack. On a hit, the target takes 1d6 piercing and 1d6 necrotoc damage. The necrotic damage increases to 2d6 at level 5, 3d6 at level 11, and 4d6 at level 17.

The material component of this spell cannot be replaced with an arcane focus.