Acid Dart

You use your action to fire a dart of emerald green acid at a creature or object you can see within range. Make a ranged spell attack. On hit, the target takes 1d6 acid damage immediately and 1d4 additional acid damage at the end of its next turn. A target that has (or gains) resistance to acid damage does not take the additional damage.

The spell's damage die increases by 1d6 and the additional damage by 1d4 at levels 5 (2d6 and 2d4), 11 (3d6 and 3d4) , and 17 (4d6 and 4d4).