Wind Blade

Making a slashing motion with your sword an extremely condensed blade of wind slices out in a 30ft cone in the direction you are facing, all creatures within the cone that aren't behind cover must make a dex saving throw taking 5d10 force, thunder or slashing on a failed save and half as much on a success.

casting this spell at 5th level or higher increases the damage by 1d10 per spell slot used