Fire Mephit

Surfaces the mephit moves over ignite and burn for 1 minute. A creature that starts its turn in a burning area, or enters a burning area for the first time on a turn, takes 3 (1d6) fire damage.

When the mephit dies, it explodes in a burst of fire. Each creature within 15 feet of it must succeed on a DC 10 Dexterity saving throw or begin burning (1d10).

Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 4 (1d6 + 1) fire damage. If the target is wearing metal armor, it takes an additional 3 (1d6) fire damage.

Each creature in a 15 foot cone that is wielding a metal weapon takes 4 (1d8) damage and must succeed on a DC 10 Constitution saving throw or drop its weapon in an adjacent space.

When a creature makes an opportunity attack against it, the mephit can impose disadvantage on the attack. If the attack misses, the attacker is dragged up to 5 feet behind the mephit.