The Seelie Court is one of the courts who historically ruled the fae, and which still exists among modern Kithain.All Changelings (save the Thallain) have seelie and unseelie aspects, expressed in their Legacies, but each individual is ruled by one and embraces the way of life of the corresponding Court.he Seelie Court is one of the courts who historically ruled the fae, and which still exists among modern Kithain.