Boughag

Suffocating Aura. Enemies within 30 feet of the boughag can’t speak, and if it is a creature who needs to breathe, it also has Disadvantage on Constitution saving throws.

Ride the Airstream. The boughag gains a Flying Speed equal to its Walking Speed if it has at least one enemy within 30 feet of it. If the boughag starts its turn in the air and doesn’t have a flying speed, it falls.

Multiattack. The boughag makes two Choking Grasp attacks.

Choking Grasp. Melee or Ranged Attack Roll: +6, reach 30 ft. Hit: 14 (4d6) Bludgeoning damage, and the target is pulled to an unoccupied space within 5 feet of the boughag and Grappled (escape DC 14). While Grappled in this way, the target is Restrained and the boughag’s speed isn’t halved by the grapple.

Death Rattle. Constitution Saving Throw: DC 14, each creature Grappled by the boughag. Failure: 14 (4d6) Bludgeoning damage. Success: Half damage. The boughag gains Temporary Hit Points equal to 5 times the number of creatures who failed the saving throw.

Thunderous Deflation. Trigger: The boughag drops to 30 hit points or fewer. Response -- Constitution Saving Throw: DC 14, each creature in a 30-foot Emanation from the boughag. Failure: 16 (3d10) Thunder damage, and the target is Deafened until the end of its next turn. Success: Half damage only. Failure or Success: The boughag releases all creatures it is grappling and flies up to its Speed.