Balazar's Roaring Wind

A buffet of freezing wind appears in a location you choose within range. The area of the wind consists of up to ten 10-foot cubes, which you can arrange as you wish. Each cube must have at least one face adjacent to the face of another cube. Each creature in the area must make a Dexterity saving throw. It takes 7d10 cold damage on a failed save, or half as much damage on a successful one. Those caught within must make a con save as well or have their speed reduced by 10 feet for 1 minute.

The cold damages objects in the area and freezes the ground within the area affected making it difficult terrain. If you choose, plant life in the area is unaffected by this spell.