Eroe's Earthen Lance

You conjure forth a javelin sized projectile that is pointed at its tip, which you hurl at one creature or object within range. Make a ranged spell attack against the target. On a hit, the target takes 1d6 piercing damage and must succeed on a Strength saving throw or be pushed 10 feet directly away from you or be knocked prone (your choice). The projectile then vanishes.

This spell's damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).