Baharihir

Multiattack. The Baharihir makes 4 effing attacks: two with its nasty aa bite, one with it's lit breath weapon and one with it's mean hug.

Bite. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 22 (3d10 + 6) piercing damage.

Mean Hug. Melee Weapon Attack: +10 to hit, reach 5 ft., one Large or smaller creature. Hit: 14 (2d10 + 6) bludgeoning damage plus 14 (2d10 + 6) slashing damage. The target is grappled (escape DC 16) if the Baharihir isn't already constricting a creature, and the target is restrained until this grapple ends.

Lightning Breath (Recharge 4–6). The Baharihir exhales a line of lightning that is 20 feet long and 5 feet wide. Each creature in that line must make a DC 15 Dexterity saving throw, taking 69 (12d10) lightning damage on a failed save, or half as much damage on a successful one.

Nom Nom. The Baharihir makes one bite attack against a Medium or smaller target it is hugging. If the attack hits, the target is also swallowed, and the grapple ends. While swallowed, the target is blinded and restrained, it has total cover against attacks and other effects outside the behir, and it takes 21 (6d6) acid damage at the start of each of the Baharihir turns. A Baharihir can have only one creature swallowed at a time.

If the Baharihir takes 30 damage or more on a single turn from the swallowed creature, the Baharihir must succeed on a DC 14 Constitution saving throw at the end of that turn or regurgitate the creature, which falls prone in a space within 10 feet of the Baharihir. If the Baharihir dies, a swallowed creature is no longer restrained by it and can escape from the corpse by using 15 feet of movement, exiting prone. Any creature swallowed by a Baharihir smells so terrible, they cannot rest until cleaned.

After a successful attack on the Baharihir, if can use its reaction to move up to 100 feet anywhere else it chooses without provoking an attack of opportunity. It can slither/scuttle underneath the helm of a ship and hanh out there waiting to attack again. A real **** you sort of ability.