Mind Flayer Pseudodragon

Keen Senses. The possum has advantage on Wisdom (Perception) checks that rely on sight, hearing, or smell.

Magic Resistance. The possum has advantage on saving throws against spells and other magical effects.

Limited Telepathy. The possum can magically communicate simple ideas, emotions, and images telepathically with any creature within 100 feet of it that can understand a language.

Multiattack. The possum makes two Claw attacks and one Tentacle attack. Alternatively, it can use either its Power Shriek or Extract Brain action.

Claw. Melee Weapon Attack: +2 to hit, reach 10 ft., one target. Hit: 5 (2d4 + 2)  slashing damage.

Tentacle. Melee Weapon
+2 to hit, reach 5 ft., one target. Hit: 5 (2d4 + 2) piercing damage.

Power Shriek (Recharge 5-6): The possum screams, emitting psychic energy in a 15 foot cone. Each creature in that cone must succeed on a DC 10 Intelligence saving throw, or take 10 (4d4 + 2) psychic damage.

Extract Brain. Melee Weapon Attack: +2 to hit, reach 5 ft., one incapacitated humanoid grappled by the possum. Hit: The target takes 25 (10d4)  piercing damage. If this damage reduces the target to 0 hit points, the Possum kills the target by extracting and devouring its brain.