Ballista Bolt

You pitch a dart or javelin with all your might at a creature or object within range. In flight, the weapon thrown grows to be the size a ballista bolt and speeds towards to with magical haste. Make a ranged weapon attack against the target. On a hit the target takes 1d10 piercing damage, then the weapon returns to you in it's original state. The piercing damage dealt by this spell is considered magical, even if the weapon used as the material component isn't.

The size of the ballista bolt and this spell's damage increases by 1d10 when you reach 5th level (2d10), 11th level (3d10), and 17th level (4d10).