Yuan-Ti

A race of snake-like humanoids created when wood elves were corrupted by infernal magics. They come in three forms; purebloods, malisons, and abominations. All yuan-ti have a sort of psychic connection with snakes, and are experienced with poison magic. Pureblood yuan-ti are similar to wood elves in appearance, but have some visual quirks. This ranges from serpentine eyes to long canines to patches of scales. Purebloods are especially good at poison magic. Malisons are purebloods that have been further corrupted. They still look like wood elves, but are obviously inhuman, with pieces of their body replaced with that of a snake. This includes a serpentine head instead of a humanoid head, a snake's tail rather than legs, and, in extreme cases, snake’s heads instead of hands. Finally, there are the abominations. They are fully corrupted, and fully serpentine, except for a pair of humanoid arms.

Yuan-ti were created by the Snake Lord, Tuskad. After the Fey Genocide, many wood elves escaped to the jungles and rainforests of the world, hoping for safety. Tuskad took advantage of this by infecting the wood elves with dark magic, transforming them into yuan-ti. The yuan-ti built great cities in honor of Tuskad, and made many technological and magical advances. Many of these cities have been destroyed, but some are still whole.