Bakunawa

Bite. Melee Weapon Attack: +4 to hit, reach 10 ft., one creature. Hit: 9 (2d6 + 2) piercing damage. The bakunawa bites at its prey with its four-sided mouth.

Slash. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 4 (1d4 + 2) slashing damage. The bakunawa uses its countless arms to slash at opponents.

Flyby. If the bakunawa moves at least half its original speed before attacking with its Slash attack, it may use its bonus action to move half its speed again after its attack, whether it hits or doesn't. The movement generated by said bonus action does not provoke opportunity attacks.

Myriad Slashes. The bakunawa may use its bonus action to perform an additional Slash attack against a creature in its reach. This can only be used when the bakunawa has attacked using its Slash attack on its turn.

The bakunawa can take 2 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The bakunawa regains spent legendary actions at the start of its turn.

Stab. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 4 (1d4 + 2) piercing damage. This legendary action can only be used during Swallow the Moon.

Swallow the Moon. Bakunawa expands its enormous wings and blocks out all moonlight on a 20 ft. x 20 ft. cube in front of it. Creatures enveloped by its wings suffer the same penalties as if blinded. Creatures with Darkvision are unaffected by this darkness. During Swallow the Moon, the bakunawa may only atack using its Slash attack, its Myriad Slashes bonus action or its Stab legendary action. This mythic action can only be used once the bakunawa has perched.