Twirling Blade

You swing your blade with inhuman speed, empowered by your magic to sweep around you. Each creature within range, other than you, must succeed on a Dexterity saving throw or take 1d6 damage of the weapon's type.

At Higher Levels. This spell's damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).