Bone Claws

Choose a creature within range. You infuse them with osteomantic energy, growing sharp claws from their carpal bones. For the duration, the target’s unarmed attacks deal an additional 1d4 slashing damage on a hit.
At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases to 1d6 at 2nd level, 2d4 at 3rd level, 2d6 at 4th level, and 3d4 at 5th level.