Derogate

The words you spit hurt like poison. Make a ranged spell attack against the target. On a hit, the target takes 1d8 poison damage and the target must make a constitution saving throw or be poisoned until the end of your next turn.

This spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).