How I Stopped Worrying and Learned to Love Eberron
The Feywild, a wild reflection of the Material Plane, is the plane of primal spirits, and is called Thelanis in the taxonomy of Eberron’s planes.
Thelanis, the Faerie Court, is similar to both Eberron and Lamannia in that it bears untamed expanses of rugged forests and crystal-clear waters dotted with small settlements. Arcane spells are enhanced on Thelanis and time flows differently. Every day in Thelanis equals a week on the Material Plane, this time catches up to any person traveling back to the Material Plane. If one spends too much time on Thelanis moving back to Eberron might suddenly kill the person of old age. When Thelanis is coterminous to Eberron certain magical areas appear such as faerie rings and faerie mounds often accompanied by mysterious lights. The feyspires that have appeared in Khorvaire are a well-known example of this phenomenon. These areas are conduits between Thelanis and the Material Plane and inhabitants of either plane can find themselves transported back and forth. When Thelanis is remote fey creatures grow less prevalent. Some argue that the fey hibernate over this period, but these claims are unsubstantiated by any real evidence.