Blade rain

You summon magical blades of energy floating in the air and make them fall on your enemy inside a 10 foot radius centered on a point you can see. Each creature inside that zone must make a DC12 dexterity saving throw, taking 2d10 force damage on a failure or half as much on a successful save. 

At higher level: for each spell slots higher than level 2, the damage is augmented by 1d10, the radius by 5ft and the DC by 1.