Metabot's Manual of Magical Maneuvers

Earth Shatter

5-level Evocation

You slam your weapon into the ground, releasing a torrent of energy at a location within range. Creatures within a 5-foot cube at the target location must make a Dexterity saving throw or take 2d10 thunder damage and be flung 20 feet into the air. On a success they take half damage and aren't flung.
Each creature within a 15 feet wide line emanating from you towards the target location must make a Dexterity saving throw. On a failure they take 2d10 bludgeoning damage and fall prone. On a success they take half damage and don't fall prone.