Trebuchet

You catapult a medium or larger size object, that isn’t being worn or carried, weighing up to 200lb, and that you are touching, at a point you can see within range. Each creature within a 5-foot wide, 30-foot long line from that point, in a direction directly away from you, must succeed on a Dexterity saving throw or take 8d6 bludgeoning damage and be knocked prone. This spell does double damage against objects and structures.