Corrosive Arrow

You make a ranged attack with the weapon used in the spell’s casting against a creature you can see within the weapon’s range. You infuse your ammunition with potent vitriol. On a hit, the target suffers the weapon attack's normal effects, and until the start of your next turn, the next time it takes damage it loses any resistance it has to that damage.

At Higher Levels. At 5th-level, the spell deals an extra 1d8 acid damage to the target on a hit. This damage increases again at 11th-level (2d8) and 17th-level (3d8).