Shockwing

Antennae. The giant moth has advantage on Wisdom (Perception) checks that rely on smell.

Charged. At the start of each of the shockwing's turns, each creature within 5 feet of it must succeed on a DC 12 Constitution saving throw or take 2 (1d4) lightning damage. This trait doesn't function if the shockwing has used its Fulminating Wings in the last 24 hours.

Multiattack. The shockwing makes two proboscis attacks.

Proboscis. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) piercing damage and 2 (1d4) lightning damage.

Fulminating Wings (1/Day). A 20-foot radius burst of electricity releases from the shockwing. Each creature in that area must succeed on a DC 12 Constitution saving throw or be stunned until the end of its next turn.