The 12 Unique Beasts of Fillory are creatures that each have their own special abilities.
A white stag that can grant anyone 3 wishes.
A hare that can predict the future of anyone who managed to capture it.
Great Bird of Peace
A large, flightless, cassowary-like bird that can stop fights with its presence.
A large lizard that can turn a person invisible for a year if they desired.