Avalanche

Thunderous rumblings emerge from the ground beneath your feet. Choose earth or snow. A blast of the chosen material explodes from your hands and the ground, rushing forward in a cataclysmic onslaught. Any creature caught in the area must succeed on a Strength saving throw, taking 7d8 damage, halved on a successful save. The damage is 6d8 bludgeoning and 1d8 thunder for earth, and for snow it is 3d8 cold and 4d8 bludgeoning. Structures and unattended objects automatically take the damage, though small, hard objects may simply be buried relatively unharmed. A creature that fails its saving throw is also pushed back 10 feet and restrained. It can make an Athletics check against your spell save DC as an action on each of its turns, freeing itself on a success.

The area is difficult terrain, but snow melts in appropriate weather.