Sourcery (Discworld: A Wizards Novel 3)

Unseen University, the Discworld’s most magical establishment, has finally got its wish: the emergence of a wizard more powerful than ever before. In Terry Pratchett’s fifth Discworld book an eighth son of an eighth son is born, a wizard squared, a source of magic. A sourcerer. You’d think they would have been a little more careful what they wished for . . .