Wallop knockback

Unarmed strike a target size medium or smaller, the target takes an additional 3 (3d4) bludgeoning damage and is thrown in a straight line up to 60 feet in the direction you are facing. Stopping early if they impact against a solid surface, If the target would strike another creature, the creature must make a Dexterity saving throw. On a failed save, the target collides with the other creature it stops moving and both the target & the creature hit take 3d8 bludgeoning damage.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the maximum size of targets that you can hit with this spell increases one size, and the damage increases by 1d8 bludgeoning, for each two slot levels above 5th.