Blastback

The target must make a Strength saving throw. On a fail, the attacker is pushed back 10 feet. On a save, they are pushed back 5 feet, and so is the caster in the opposite direction. When the target or caster collides with something, they take 1d4 force damage. Outside of combat, you can use this spell to assist with movement by throwing you 10 feet in the opposite direction you cast it. You take no damage if you collide with something as a result of this spell outside of combat.

At higher levels, the force increases, pushing people back an extra 5 feet.