Titanic Push

You conjure up a wave of pure kinetic force that crashes down on an area within range. The area can be up to 30 feet long, up to 15 feet wide, and up to 15 feet tall. Each creature in that area must make a Strength saving throw. On a failed save, a creature is moved 30 feet away from the point of impact, takes 4d8 bludgeoning damage and 4d8 force damage,  and is knocked prone. On a successful save, a creature is move half the distance, takes half as much damage and isn’t knocked prone. The wall then continues going for 10 feet, extinguishing unprotected flames along its path, then it vanishes.