Earthquake
Make a Spellcast Roll (16). Once per short rest, on a success any targets within very far range must make a Reaction Roll (18). On a failure, they take 3d10+8 physical damage and are Vulnerable. On a success, they take half damage (rounded up). When you successfully cast this spell, all terrain within very far range of you becomes difficult to move through, and structures within this range may sustain damage or crumble.