Banagger's Freezer

A line of howling wind 30 feet long and 5 feet wide emanates from you in a direction you choose. Each creature in the line must make a constitution  saving throw. A creature takes 4d12 cold 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 5th level or higher, the damage increases by 1d12 for each slot level above 2nd.