Multiattack. The Kut-Ku makes two attacks: one with its bite and one flaming projectile. While flying, it can use its claws in place of one other attack. Or three flaming projectiles.

Bite. Melee Weapon Attack: +7 to hit, reach 10 ft., one creature. Hit:  (d6 + 4) piercing damage.

Claws. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 13 (2d6 + 4) slashing damage.

Flaming Projectiles. Range Weapon Attack: +7 to hit, reach 30 ft., one to three creatures. Hit: (d8 + 4) bludgeoning damage per each projectile. The target must make a DC 15 Dexterity saving throw, taking (one d6) fire damage on a failed save, or half as much damage on a successful one.

Charge. If the Yian Kut-Ku moves at least 20 feet straight toward a target and then hits it with a its claws attack on the same turn, the target takes an extra 7 (2d6) slashing damage. If the target is a creature, it must succeed on a DC 13 Strength saving throw or be knocked prone. The Kut-Ku falls prone after the attack.