The mephit explodes when it dies. Dexterity Saving Throw: DC 11, each creature in a 5-foot Emanation originating from the mephit. Failure: 7 (2d6) Fire damage. Success: Half damage.
plus 3 (1d6) Fire damage.
Dexterity Saving Throw: DC 11, each creature in a 15-foot Cone. Failure: 7 (2d6) Fire damage. Success: Half damage.