Sourcery (1988)

The fifth in the incredibly popular Discworld series, SOURCERY features some old favourites. A sourceror is born: a wizard so powerful that by comparison all other magic is just mucking about in pointy hats. And his very existence brings the Discworld to the brink of all-out thaumaturgical war*. All that stands in the way is Rincewind, who wants to save the world - or at least that part of it that contains him . . . * A bad thing.