The Fey Binder's Handbook

From publisher blurb: The Fey Binder’s Handbook is an expansion and reimagining of the Fallen Fey Sphere, first introduced to the world in the Skybourne campaign setting and designed for the Pathfinder Roleplaying Game. This sphere grants its users the ability to mimic and command the elusive powers of the fey, including commanding the blinding beauty of the nymph, commanding legions of gremlins, and even wearing the crown of the great courts of the fey. Bring something new to your tables and explore the great powers of the unseen world with the Fallen Fey sphere!