PHB
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 ).