Arcane Blade Barrage

You unleash a barrage of swirling arcane blades in a 30-foot cone. Each creature in the area must make a Dexterity saving throw. On a failed save, a creature takes 5d8 slashing damage. On a successful save, the damage is halved. The blades then dissipate into harmless motes of light.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d8 for each slot level above 4th.