The Keystone of [[Astrazalian, The City of Starlight|Astrazalian]]. It acts as a [[Planar Anchor]] and allows [[Astrazalian, The City of Starlight|Astrazalian]] to phase between [[The Feywilds]] and [[The Material Plane of Caledon]]. During the [[Astrazalian-Fomorian Conflict]], Astrazalian lost The Keystone, and it entered into the possession of [[Thrumbolg, The First Lord]], who emplayed [[Zasal|Supreme Archmage Zasal]] to use it unlocking the mysteries of [[The Mag Tureah Portal Room]]. The Keystone was later recovered and put back in it's rightful place by [[The Boy Scout Boys]] during [[The Keystone Heist]].