Clayr is a fictional group of people from the book series "The Keys to the Kingdom" by Garth Nix. They are known for their ability to see the future through visions, which helps them guide others in making important decisions. The Clayr live in a place called the Clarion, a mystical and snowy region. The Clayr are characterized by their blue eyes and white hair, which symbolize their connection to the Old Kingdom. They play a crucial role in the series, as their foresight is essential for maintaining balance and order in the world.