Sword Coast Adventurer's Guide
0-level (Cantrip) Conjuration
You create a momentary circle of spectral blades that sweep around you. Each creature within range, other than you, must succeed on a Dexterity saving throw or take 1d6 force damage.
At higher levels: This spell's damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).