A Planet Called Treason

"A Planet Called Treason" is a science fiction novel written by Orson Scott Card, published in 1976. The story is set in a futuristic world where humanity has been divided into various factions with unique abilities, and it explores themes of identity, humanity, and social structures. The novel follows a character named Lanik Mueller, who possesses the ability of regeneration, allowing him to heal from injuries rapidly and even regenerate lost limbs.