Death Burst. 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.
Innate Spellcasting (1/Day). The mephit can innately cast blur, requiring no material components. Its innate spellcasting ability is Charisma.
Claws. Melee Weapon Attack: +2 to hit, reach 5 ft., one creature. Hit:2 (1d4) slashing damage plus 2 (1d4) fire damage.
Steam Breath (Recharge). 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.
Mephits are capricious, imp-like creatures native to the elemental planes. They come in six varieties, each one representing the mixture of two elements.