Updates to the stat block:
Immunity does not extend to uncommon and rare magical weapons.
Alien Horror feature lasts 1d4 rounds + saving throw at the end of every round.
Tentacle stun lasts 2d4 rounds + saving throw at the end of every round.
Brain Theft: must first hit with a +12 ranged melee attack and only works on unconscious creatures.
Manifest Maw: range is 120ft
Perception reduced to + 9 and + 5 if further then 150ft away