- There was an eighth son of an eighth son. He was, quite naturally, a wizard. And there it should have ended. However (for reasons we"d better not go into), he had seven sons. And then he had an eighth son...a wizard squared...a source of magic... a Sourcerer. "Sourcery" sees the return of Rincewind and the luggage as the Discworld faces its greatest - and funniest - challenge yet.