The next time you make a ranged weapon attack during the spell’s duration, the weapon’s ammunition, or the weapon itself if it’s a thrown weapon, takes on the qualities of light or shadow, allowing it to pass harmlessly through walls and damage any living thing in its way. On a hit, the target takes the normal damage of the weapon, plus an additional 2d8 radiant or necrotic damage, your choice. In addition, each creature in the weapon's path must make a Dexterity saving throw. On a failed save, the creature takes damage equal to half the damage dealt to the initial target.
The ammunition or weapon then returns to its normal form.
At Higher Levels: When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d8 for each slot level above 2nd.