Barbarossa's Cold Dispersion

A sudden blast of cold emerges from a point that you can see within range in a 20-foot-radius sphere. Each creature in the sphere must succeed on a Constitution saving throw or take 2d6 cold damage and the ice covers their legs, dropping their movement speed to 0 ft for the duration.

At Higher Levels

When you cast this spell using a 3rd-level spell slot or higher the damage increases by 2d6 for each slot level above 2nd.