Cataclysmic Eruption

You concentrate and slam the ground, causing chunks of stone to smash into targets you can see around you. All creatures you choose within 30 ft of you must make a Strength saving throw or be thrown by stone protrusions. On a failure, targets take 8d8 bludgeoning damage and, if they are Large or smaller, are shoved back 30 ft from you and are knocked prone, or take half damage and not be shoved on a success.

The areas directly in front of the creature that are shoved also have a 5 ft tall and wide segment of stone in front of them that is now permanently apart of the geography as terrain.

At Higher Levels. When you cast this spell using a spell slot of 7th or higher, the radius increases by 10 ft for each slot level above 6th.