Avalanche

A thunderous avalanche of snow and ice pummels the ground in a 100ft. cube in a location you can see within range. All creatures in that area must succeed on a Constitution saving throw, taking 5d8 cold damage and 5d8 bludgeoning damage and falling prone on a failed save. On a successful save, a creature takes half damage and is not knocked prone.

When cast using a spell slot of 8th level or higher, the base damage increases by 1d8 cold and 1d8 bludgeoning damage for each slot level above 7th.