Boysenberry's Storm of Glass

You conjure an orb of glass imbued with magic and hurl it at a point within range, which shatters into a 15-foot-radius storm of tiny glass shards that lasts for the duration. The affected area becomes difficult terrain.

Creatures that enter the affected area or begin their turn within it must make a Dexterity saving throw. A target takes 3d4 piercing damage on a failed save, or half as much damage on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d4 for each slot level above 2nd.