Butterfly In The Sky (Peacemaker Spoilers)

During the A-Z challenge this year I mentioned Peacemaker's butterflies. A noble butterfly, Murn was a member of Peacemaker's team is discussed in the Support Staff post. The aliens hadn't appeared in DC before the series, though they do kind of remind me of Lovecraft's Mi-go.  

The Butterflies came to Earth when their planet became inhabitable. They quickly noticed how flawed humans were and decided for the species' and the planet's best interest they would take control of the most powerful humans to course correct Earth's inevitable destruction. 

These stats were inspired by the Monster Manual's Intellect Devourer.

Butterfly

Tiny Monstrosity, Any

Armor Class: 15 (Dex, Size)

Hit Points:  14 (6d4)

Speed: 20 ft., Fly 40 ft.

Challenge: 2 (450 XP)

Str 2 (-4) Dex 18 (+4) Con 11 (+0) Int 16 (+3) Wis 16 (+3) Cha 10 (+0)

Saving Throws: Dex +6

Skills: Perception +4, Stealth +6

Senses: Darkvision 60 ft., passive Perception 14

Languages: Butterfly

Trait

Butterfly Burrow: When making a grapple check the butterfly can use its Dexterity instead of Strength.

Actions

Claw: Melee Weapon Attack. +6  to hit, reach 5 ft., one target. Hit: 1 slashing.

Possess Creature: The butterfly tries to burrow into the brain of an incapacitated humanoid. The creature makes a Constitution saving throw (DC 15). If successful nothing happens and the butterfly can be removed without harming the host. If the saving throw is not successful the butterfly burrows in the creature's brain. This technically kills the creature, the the body does not die. The butterfly is now in full control of the creature. The butterfly retains its Intelligence, Wisdom, and Charisma, as well as proficiencies. It otherwise takes on its host's stats (with some enhancements). The hosts Strength, Dexterity, and Constitution scores increase by 4. It's movement score increases by 10 ft. It also gains Damage Resistance: Bludgeoning from Non-Magical Sources. Finally they gain a proboscis that is used to feed on nectar-like fluid.

If the host body drops to 0 hit points, the butterfly must leave. By spending 5 feet of its movement, the butterfly can voluntarily leave the body. The body then dies, unless its brain is restored within 1 round.