Nagini

The serpentine people of jungles to the east are secretive, xenophobic and deeply magical. They tend to keep to themselves but do send out spies or scholars sometimes in pursuit of magical artefacts, which they hoard in their temples in the deep jungle. They have potent psionic and magical abilities that are one of the inheritance from Naga ancestors. They also bear some reptiloid features though in humanoid forms.
5e Yuan-Ti Pureblood stats