Steam Mephit

When the mephit dies, it explodes in a cloud of steam. Each creature within 5 feet of the mephit must succeed on a DC 10 Dexterity saving throw or take 4 (1d8) fire damage.

Melee Weapon Attack: +2 to hit, reach 5 ft., one creature. Hit: 2 (1d4) slashing damage plus 2 (1d4) fire damage.

The mephit exhales a 15-foot cone of scalding steam. Each creature in that area must succeed on a DC 10 Dexterity saving throw, taking 4 (1d8) fire damage on a failed save, or half as much damage on a successful one.