Air Blades

You concentrate wind that is hurled at high speeds. This wind travels in a cone. The first object or creature within this cone must make a dexterity saving throw. On a fail they take 10d10. This spell's damage goes down by 1d10 after every 10 feet pass 60.

At higher levels this spells range increases by 60 feet and the spells damage reduction is increased by 60 feet. This spell also does an additional 2d10 damage.