The Ropemaker Series by Peter Dickinson

Tilja has grown up in the peaceful Valley, which is protected from the fearsome Empire by an enchanted forest. But the forest’s power has begun to fade and the Valley is in danger. Tilja is the youngest of four brave souls who venture into the Empire together to find the mysterious magician who can save the Valley... moreTilja has grown up in the peaceful Valley, which is protected from the fearsome Empire by an enchanted forest. But the forest’s power has begun to fade and the Valley is in danger. Tilja is the youngest of four brave souls who venture into the Empire together to find the mysterious magician who can save the Valley. And much to her amazement, Tilja gradually learns that only she, an ordinary girl with no magical powers, has the ability to protect her group and their quest from the Empire’s sorcerers.From the Hardcover edition. less

ONCE THE 24 MOST powerful magicians in the Empire pledged to use their magic only to protect the people. But the promise that bound them has now corrupted them. They have become a single terrible entity with a limitless desire for domination. Only the Ropemaker may be able to stop them, but he has not been seen for over 200 years. Into this dangerous world come Saranja, Maja, and Ribek. They seek the Ropemaker so that he might restore the ancient magic that protects their valley... moreONCE THE 24 MOST powerful magicians in the Empire pledged to use their magic only to protect the people. But the promise that bound them has now corrupted them. They have become a single terrible entity with a limitless desire for domination. Only the Ropemaker may be able to stop them, but he has not been seen for over 200 years. Into this dangerous world come Saranja, Maja, and Ribek. They seek the Ropemaker so that he might restore the ancient magic that protects their valley. It is the task they were born to, but now it seems there is far more than the valley at stake should they fail. . . . less