This article contains spoilers for the following products: The City Outside of Time


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A ship's passengers look on as Crystilan's dome shatters.

Large city
9,100 humans, 600 halflings, 800 aiuvarins, 250 giants, 200 elves, 200 other
Source: The City Outside of Time, pg(s). 34

Xin-Edasseril was the capital of the Thassilonian realm of envy, Edasseril.1 It is now the capital of the kingdom of Edasseril within the nation of New Thassilon.2


Initially located on modern-day Chakikoth Isle in the Ironbound Archipelago of northwestern Avistan,1 Xin-Edasseril was later moved eastwards, to the site of modern Peridot Isle, in -5402 AR. Few clues to Xin-Edasseril's exact location had survived to the present day; in modern times, stones from the ruins of Xin-Edasseril were used to create the town of Melesa.34 The city's former site is now referred to as Old Xin-Edasseril.5

Although it shared the monumental architecture of the other Thassilonian cities, it was a low-lying city built on a disease-spawning marsh, with devastating plagues that the ancient priests of Desna could not prevent even with their healing magic. It was constantly plagued by attacks from ettercaps, ettins, and elven raiders.31 Its byzantine bureaucracy was filled with ambitious and ruthless administrators who cared more about their personal advancement than managing the realm effectively.4

Runelord Belimarius

Xin-Edasseril's final ruler, the Runelord Belimarius, oversaw the city and the nation from her palace named Miasmora, where she kept her predecessor, Phirandi, entombed in a transparent coffin of force. Xin-Edasseril's other famous attraction was the Temple of Desna's First Dream, a shining edifice of glass, diamond, and magical force that seems to have disappeared or been destroyed, although some maintain that it can still be accessed through the Dimension of Dreams.461

During Earthfall, Runelord Belimarius' attempt to create a runewell failed, trapping Xin-Edasseril in a crystal sphere, called Crystilan by the local Varisians, and suspending it outside of time.7

Modern Xin-Edasseril

Heroes shattered the dome of Crystilan in 4718 AR,8 freeing the city of Xin-Edasseril and its inhabitants from their prison in time.9


For additional as-yet unincorporated sources about this subject, see the Meta page.

  1. 1.0 1.1 1.2 1.3 Wolfgang Baur, et al. Thassilon” in Lost Kingdoms, 59. Paizo Inc., 2012
  2. Erik Mona, et al. Saga Lands” in World Guide, 109. Paizo Inc., 2019
  3. 3.0 3.1 Wolfgang Baur. “The History of Thassilon” in Burnt Offerings, 74. Paizo Inc., 2007
  4. 4.0 4.1 4.2 Robert G. McCreary. Runelords of Thassilon” in The Dead Heart of Xin, 70. Paizo Inc., 2013
  5. Vanessa Hoskins. Rusthenge” in Rusthenge, 4–5. Paizo Inc., 2023
  6. Amanda Hamon. “The City Outside of Time” in The City Outside of Time, 4. Paizo Inc., 2018
  7. James Jacobs. “The Runelord Legacy” in Secrets of Roderic's Cove, 75. Paizo Inc., 2018
  8. Erik Mona, et al. Saga Lands” in World Guide, 111. Paizo Inc., 2019
  9. Jessica Catalan. Belimarius and Sorshen” in Legends, 34–35. Paizo Inc., 2020