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. Thelanis is home to the fey, most notably the eladrin and their feyspires.
Thelanis is one expansive lush forest, with trees of enchanting beauty surrounded by mesmerizing lights. Phosphorescence gleams on plants and stones, lighting the eternal twilight of the plane, while the sky is full of strange stars.
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.
- The most populous of inhabitants of Thelanis are the eladrin and the gnomes, both of which live divided amongst the Summer and Winter Courts. They live amongst lush feyspires.
- Other fey inhabit Thelanis, including banshraes, dryads, dusklings, killoran, nymphs, petals, satyrs, and sprites.
- Some outsiders also call Thelanis home, including lillends, sylphs, and tritons.
- Some plants are from Thelanis, like oaken defenders.
- The Greensinger Druids travel from Eberron to Thelanis as part of their druid training.
- The western part of the Towering Wood in the Eldeen Reaches possesses a manifest zone. This zone is called the Twilight Demesne.
- The Ruins of Pelmarane in the Demon Wastes 
Effects on the Material Plane
When Thelanis is coterminous to the Material Plane, faerie rings and faerie mounds can be found, often accompanied by mysterious lights. The boundary between the planes is thin and passage in either direction can occur easily. The fey of Thelanis lure mortals to their native realm during this time, though for reasons of mischief moreso than reasons of maliciousness.
During coterminous periods, the feyspires of the eladrin would phase into existence on Eberron. However, once the Day of Mourning occurred, the feyspires were stuck on Eberron and unable to return to Thelanis.
When Thelanis is remote, fey creatures grow less populous and their power fades.
Behind the Scenes
In the 4th edition Dungeons & Dragons, Thelanis was also known as the Feywild.
- Keith Baker, Bill Slavicsek, & James Wyatt (2004). Eberron Campaign Setting. (Wizards of the Coast), p. ?. ISBN 0-7869-3274-0.
- James Wyatt and Keith Baker (2009). Eberron Campaign Guide. (Wizards of the Coast), p. ?. ISBN 0-7869-5099-4.
- David Noonan, Ari Marmell, and Robert J. Schwalb (2009). Eberron Player's Guide. (Wizards of the Coast), p. ?. ISBN 0-7869-5100-1.
- (July 2007). Monster Manual V. (Wizards of the Coast). ISBN 0-7869-4115-4.
- James Wyatt, Keith Baker, Luke Johnson, Steven Brown (2006). Player's Guide to Eberron. (Wizards of the Coast), p. ?. ISBN 0-7869-3912-5.
- (July 2006). Monster Manual IV. (Wizards of the Coast). ISBN 0-7869-3920-6.
- Jennifer Clarke Wilkes, Ari Marmell, & C.A. Suleiman (2006). Faiths of Eberron. (Wizards of the Coast), p. ?. ISBN 0-7869-3934-6.
- Amber E. Scott (March 2007). “Dragonmarks: Manifestly Strange”. Dragon #353 (Paizo Publishing), p. 77.
|The Planes of Eberron|
|The 13 Major Planes: Daanvi · Dal Quor · Dolurrh · Fernia · Irian · Kythri · Lamannia · Mabar · Risia · Shavarath · Syrania · Thelanis · Xoriat|