Dust Mephit
Small elemental, neutral evil
Skills: Perception +2, Stealth +4
Vulnerabilities: fire
Immunities: poison
Condition immunities: Poisoned
Senses: darkvision 60 ft., passive perception 12
Languages: Auran, Terran
Traits
Death Burst. When the mephit dies, it explodes in a burst of dust. Each creature within 5 ft. of it must then succeed on a DC 10 Constitution saving throw or be blinded for 1 minute. A blinded creature can repeat the saving throw on each of its turns, ending the effect on itself on a success.
Innate Spellcasting. The mephit can innately cast sleep, requiring no material components. Its innate spellcasting ability is Charisma.
Actions
Claws. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 4 (1d4 + 2) slashing damage.
Blinding Breath. The mephit exhales a 15-foot cone of blinding dust. Each creature in that area must succeed on a DC 10 Dexterity saving throw or be blinded for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.