Caerius' Circle of Vile Repugnance

All Creatures within the spell's radius are caught in an eruption of noxious gasses from the ground and must make a constitution saving throw or be knocked prone as several powerful waves of nausea produce gagging and vomiting causing 3D8 poison damage on their first turn. On a failed save all the target can do for the next turn is heave and cannot take any actions or movements. They may make another saving throw at the end of their next turn and if they fail they remain prone and take 2D8 acid damage.