The Island of En'sura

En'sura is a small island, and a dedicated traveler can make it from one end of the island to the other in less than a day. Most stick near Sethven and the villages, where there is safety in numbers, but adventuring parties journey farther out to battle dangers and secure resources.

The entirety of the island is steeped in Extraplanar energies, the borders between the Material Plane and the other planes weakened. At times, the borders break down completely, and sections of another plane might phase into En'sura- a spitting volcano from The Plane of Fire, a mysterious arcane ruin from The Astral Plane, or a shadowy cavern from The Shadowfell. These regions are not portals, as they cannot bring one across planes, unless you have the misfortune to be standing in one when it phases back to its plane of origin. These planar slices often bring with them unwitting extraplanar visitors.

The population of Sethven is clustered around Astral Bay, with ~90% of the population living within three miles of the bay. Due to the island's dangers, people favor larger, compact, more defensible settlements over sprawling villages and isolated homes.

En'sura's seas are guarded by The Sethven Navy, and its land by The Sethven Military. Adventurers might be employed to work a job with the navy or military, or sent off on exploration tasks.

Weaver's Isle in Astral Bay hosts the island's teleportation circle, controlling entry onto the isle. It is also where The Webweaver is located, shielding settlements along the Astral Bay from Extraplanar mishap.

En'sura's greatest (and only) export is magic: magic knowledge and magic materials. Magic knowledge comes from Sethven's University and research conducted on the island, but materials come from the island's magic rich environment and the creatures which are drawn to it.

Along with the Extraplanar visitors who spill out of the island's portals, weakened planar borders mean that the natural resources of En'sura are saturated with extraplanar energy, perfect for crafting powerful magic items with.

Along with its Extraplanar visitors, En'sura is host to a variety of natural wildlife. While this includes the standard tropical beasts and plants (such as Giant Apes and Crocodiles, Treants and Shambling Mounds), it also includes some more exotic creatures, like the fearsome dinosaurs.

Stories that a Tarrasque slumbers beneath the island are (probably) unfounded.