For the duration a magical blade hovers around you. When you cast this spell and then again as an action on each of your turns until this spell ends, you can have the blade sweep between creatures of your choice within 5 feet of you. Each target must make a Dexterity saving throw or take 1d8 force damage.

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