C. S. Lewis’s The Silver Chair featured the second most powerful villainess of the Narnia world: The Green Witch, known by her more popular title of The Lady of the Green Kirtle (a Medieval term for a woman’s petticoat/gown.) She works by subterfuge, can transform into a serpent, has a knowledge of hypnotism and magic powders, and can play a mean lute. But unlike the White Witch, she never got a proper name!
Here’s some suggestions that play on her favorite color, her talent for poisons, and her affinity for snakes.
Names for The Green Witch