Beam of Disease

A beam of nauseating verdant energy extends towards a creature within the spell's range. Conduct a ranged spell attack against the target. If successful, the target suffers 2d8 poison damage and must attempt a Constitution saving throw. Upon failure, the target becomes poisoned until the conclusion of your subsequent turn.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d8 for each slot level above 1st.