Taisgath
Taisgath (Gamgweth for Sky Magic) is a small island located to the southwest of Ratha in the Reshal Sea. Considered separate from the Collection of Qi, it is entirely owned and maintained by the Moon Mage Guild. Prominent features of the island include the massive shell of a sea creature which serves as a guildhall and the mysterious obelisk for which the island was named. Taisgath is also home to the Grazhir shard named Undarverjah, which is the only named shard located within the borders of Qi.
Prominent residents include Guildleader Lomtaun of Fortune's Path and the gypsies of the same sect who remain docked on one side of the island.
The Obelisk
The enigmatic obelisk located within a quiet grove on the island has been a source of bewilderment since before the Moon Mage guild was founded. Believed to have been erected before Grazhir's destruction, the obelisk is crafted from an unknown translucent material which glows with its own internal light. IT is several feet tall, four-sided and features a gemstone on each face at the apex - a sapphire, a ruby, a topaz, and a pearl. Inscribed into every part of the sides are countless inscriptions in even more languages - some recognizable, some not.
While the main intended purpose of the obelisks is a mystery that has never been unraveled, this obelisk along with its brothers seem to act as a link between the Plane of Abiding and the Plane of Probability, and to that effect are intimately tied with a Moon Mage's ability to predict the future. Two other obelisks like it have been discovered; one in Therengia that was destroyed shortly after its discovery due to being activated but there being no more Grazhir in the sky for it to use, and one in Zoluren, located in the one-time manor of Tezirah which was accidentally turned into a heap of slag by a magical misfire. Popular theory presumes that there was also a fourth obelisk, but its location or if it even still functions is unknown.
On a more practical note, this obelisk is where Moon Mages can learn the Meah K'et cantrip, which serves as a handy light-source in a pinch. Next to the obelisk beneath a slab of stone is the entrance to the Limestone Strata, where the two planes seem to bleed into each other as the shadows there become very solid, quite alive, and extremely violent."Moon mage" is not in the list (None, Bard, Barbarian, Cleric, Empath, Moon Mage, Necromancer, Paladin, Ranger, Thief, ...) of allowed values for the "Guild association is" property.