Eberron: Shadows of the Last War
Aerenal is the ancient island kingdom of the Aereni elves, who take their name from Aeren, a mythical hero said to have freed the elves from the giants of Xen’drik. It is also home to the deathless Undying Court. Aerenal is ruled by both the Sibling Kings, a brother and sister pair that serves as the temporal authority of Aerenal who rule from Shae Cairdal, and the Undying Court, the religious leader of the elves, which reides in Shae Mordai, the City of the Dead. In addition to the Aereni elves, a small group of Tairnadal elves inhabits the steppes of Aerenal, though many have since migrated to Valenar.
Due to fear of the “walking dead” and the isolationist nature of the Aereni elves, few non-elves ever visit the small continent. While the Aereni despise the creation of the undead, the deathless of Aerenal, unlike the undead, draw power from positive, rather than negative energy, and are generally good in alignment. A manifest zone of Irian is thought to make the existence of the Undying Court possible. Aerenal is heavily forested, and many exotic plants grow there, such as the soarwood tree, whose wood is used to build airship hulls, and the necromantically charged Covadish plant.