Wind Blade

A blade of condensed air erupts from your hand. Each creature in a 60 line must make a Dexterity saving throw. A creature takes 8d8 slashing damage on a failed save, or half as much damage on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d8 for each slot level above 5th.