Vollindri's Magic Dagger

You create a spectral dagger in the air before you and launch it at a creature you can see within range. Make a ranged spell attack. On a hit, the target takes 1d8 piercing damage.

The spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).