Wild Seed by Octavia Butler

 Doro knows no higher authority than himself. An ancient spirit with boundless powers, he possesses humans, killing without remorse as he jumps from body to body to sustain his own life. With a lonely eternity ahead of him, Doro breeds supernaturally gifted humans into empires that obey his every desire. He fears no one — until he meets Anyanwu. Anyanwu is an entity like Doro and yet different. She can heal with a bite and transform her own body, mending injuries and reversing aging. She uses her powers to cure her neighbours and birth entire tribes, surrounding herself with kindred who both fear and respect her. No one poses a true threat to Anyanwu — until she meets Doro… Read more.