You summon a piece of magical ammunition which glows a very pale blue, loading it into an appropriate weapon automatically and making a ranged attack roll with that weapon against an enemy you can see within its range. On a hit, the target suffers the attack’s normal effects and must make a strength saving throw if it is medium or smaller, being knocked prone if it fails and being pushed back five feet regardless.

5th level: the ranged attack deals an additional 1d8 piercing damage and the target suffers the additional effects if it is large or smaller.

11th level: the damage bonus is increased to 2d8 piercing damage and the target has disadvantage on the saving throw

17th level: the damage bonus is increased to 3d8 piercing damage and the target is knocked prone on hit unless it is completely immune to the effect.