Air Blade

You brandish the weapon used in the spell’s casting and make a melee attack with it against one creature within 5 feet of you. On a hit, the target suffers the weapon attack’s normal effects, and must make a STR saving throw. On a failure, it suffers slashing damage equal to your Spellcasting modifier and a large or smaller creature is pushed back 5 ft.

At Higher Levels: At 5th level, the Slashing damage on a failed STR save increases by two 1D8 + SCM. It increases to 2D8 + your SCM at 11th Level and pushes the target back by 10 ft instead of five. The damage increases again to 3D8 + your SCM at 17th level.