Poisonous green vapors burst forth in spirals around you, striking those near you and then quickly disperse.
Creatures in a 10 foot sphere around you make a constitution saving throw. On a fail they take 2d12 poison damage and become poisoned until the end of there next turn. On a success they take half the damage and aren't poisoned.

higher level spells: for each spell slot above 2nd the damage increases by 1d12