Thunderous Impact

You release a concentrated blast of booming energy directed toward a creature within range. The target must make a Strength saving throw, taking 4d8 damage on a failed save, or half as much on a successful one. A creature that fails this save is pushed up to 30ft. backwards. If the creature collides with a solid object while flying backwards, both the creature and the object take 1d6 bludgeoning damage. The creature and object take an additional 1d6 bludgeoning damage for every 10 feet they fly backwards.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the creature is knocked back another 20 feet on a failed save.