Arcane Shrapnel

The spell caster enchants a piece of ammunition for a ranged weapon, or a thrown weapon, storing kinetic energy in the item. After the item is used to make a ranged attack, whether it hits or misses, it shatters with the stored arcane energy. Every creature within a 5 ft radius of the target must make a DEX saving throw, taking 3d6 force damage on a failed save, or half as much on a successful save. The ammunition or thrown weapon is consumed regardless. 

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, add 2d6 force damage per spell slot level.