Lûthloth Mîr, known in Common as the Dream-Budding Gemstone, was one of the most closely-guarded and mysterious of the known Epochal Artifacts. Thought to have been a gift from the Azure Paragon to Teralis the Evergreen, the Dream-Budding Gemstone was created by harnessing the magic of a Leyline to the Astral Border. It had stayed in the possession of Xilvalur for the entirety of its known history, never leaving the capital of Tirion Isilmírë.
Much like the Astral Border itself, the powers of the Dream-Budding Gemstone were seemingly myriad, but never well-documented magical effects. About the size of a small statue, it could act as both a Scrying mirror and Portal to at least any location in the Wood of Ara'mírë, transporting a creature instantaneously with planar power. When a sufficiently skilled Spellcaster looked through such a portal, they could completely alter a visible creature's state of mind with both Telepathy and impossibly powerful illusions. Generally, they would possess creatures to turn away from the woods, but significantly more destructive mental effects could also be applied.
Drawing energy from the Astral itself, the artifact had no known limits to its magic. The Elven guards of Xilvalur used these powers, in conjunction with magical alarms and scrying sensors placed throughout the forest, to make their capital a virtually impregnable bastion.