A flurry of magic snowballs erupts from a space you can see within range, filling a 15-foot cube. Each creature of your choice within that area must make a Dexterity saving throw. A creature takes 3d6 cold damage on a failed save, or half as much damage on a successful one.
Using a higher-Level Spell Slot. The damage increases by 1d6 for each spell slot level above 2nd.