Bone Spur

You hurl a beam of crackling energy. Make a ranged spell attack against one creature or object in range. On a hit, the target takes 2d4 Necrotic damage. The target must make a constitution saving throw or have the poisoned condition until the end of your next turn

Cantrip Upgrade. At higher levels it deals an additional 2d4 at 5th level, and additional 4d4 at 11th level, and additional 6d4 at 17th level