Pratchett has an uncanny ability to create an unusual and creative adventure, combine it with layers of symbolism, myth, and cultural detail, and then wrap the whole package in the kind of sparkling wit that rewards intelligence and careful reading. There's a reason he's such a favorite with gifted children and teens; as with his other novels, readers will come away from this feeling that they've had something to chew on, a full and varied banquet, not the usual thin gruel of ordinary stories.
There are many delightful creations here, primarily, of course, the Nac Mac Feegle themselves. Whenever they're on stage, the story fairly sizzles with wit and invention. Equally wonderful, though in a very different way, are the flashbacks to Tiffany's Granny Aching, an old sheepherder whose hardheaded wisdom is the product of a life lived in the chalk hills, and is reflected in her granddaughter. And Tiffany herself, busily clanging monsters with her frying pan while wondering about magic, is a more than winning heroine.