In the Xanth collection by Piers Anthony, the Naga undoubtedly are a race of human-headed serpents that may transform amongst entirely human and serpent kinds, like any species and measurement of snake. Phaya Nak or Phaya Nāga (Thai: พญานาค; RTGS: phaya nak; lit. 'lord of Nāga', phaya derived from Mon https://daftarnaga2658999.blogs100.com/31009221/getting-my-daftar-naga26-to-work