Vylja's Airbolt

You blow air through the blowpipe and it turns into a powerful gust of wind that strikes a single creature within range. That creature must make a Dexterity saving throw. It takes 4d8 bludgeoning damage on a failed saving throw, or half as much on a successful one. The creature is also knocked prone if it fails its saving throw, or is pushed backwards 5 feet if it succeeds.