Treason

A revised and expanded version of A Planet Called Treason (1979).
Lanik Mueller's birthright as heir to planet Treason's most powerful rulership will never be realized. He is a "rad" – radical regenerative. A freak among people who can regenerate injured flesh... and trade extra body parts to the Offworld oppressors for iron. For, on a planet without hard metals – or the means of escape – iron is power in the race to build a spacecraft.
Iron is the promise of freedom – which may never be fulfilled as Lanik uncovers a treacherous conspiracy beyond his imagination.
Now charged with a mission of conquest – and exile – Lanik devises a bold and dangerous plan... a quest that may finally break the vicious chain of rivalry and bloodshed that enslaves the people of Treason as the Offworld never could.
Orson Scott Card
Orson Scott Card (born 1951) is an American author, critic, public speaker, essayist, columnist, and political activist. He writes in several genres, but is primarily known for his science fiction. His novel Ender's Game (1985) and its sequel Speaker for the Dead (1986) both won Hugo and Nebula Awards, making Card the only author to win both science fiction's top U.S. prizes in consecutive years. He is also known as an advocate for The Church of Jesus Christ of Latter-day Saints, of which he has been a lifelong practicing member, and as a political commentator on many issues, including opposition to homosexual behavior and the legalization of same-sex marriage.