After the cataclysmic Fall of the Eldar in the 30th Millennium following the birth of the Chaos God Slaanesh, the Craftworld Eldar began to walk both the Eldar Paths and make use of Spirit Stones to protect their souls from being devoured by the eternal hunger of Slaanesh, She Who Thirsts. When an Eldar dies, his or her Spirit Stone is reverently grafted to the Wraithbone core of his or her Craftworld in the place known as the Dome of Crystal Seers, joining and mingling with the countless souls of the past Eldar already present within the Craftworld's structure. The resulting gestalt psychic entity is known as the Infinity Circuit, and is an integral part of a Craftworld's life, subtly providing guidance to the living Eldar dwelling within the Craftworld and protecting them against Warp-sp