The kezai's mandibles drip a searing acid, instantly igniting the gas around it. Each creature within 20 feet of the kezai must make a DC 14 Dexterity saving throw, taking 18 (4d8) fire damage on a failed save, or half as much damage on a successful one. The kezai's Nauseous Gas trait becomes inactive for 1 minute. The kezai can't use Searing Gas unless Nauseous Gas has been active for at least 1 minute.