Ailment Ray (D)

A bolt of sickly greenish energy lashes a creature within range. Make a ranged spell attack roll. If it hits, the target suffers 2d8 poison damage and must pass a Constitution saving throw or be poisoned until the end of your next turn.

At higher levels When you cast this spell using a spell slot of level 2 or higher, the damage increases by 1d8 for each slot level greater than 1.