The Unspeakable One is the master of those who seek to unveil the mysteries of death. It is through meditation upon the Yellow Sign that the devotee of Hastur seeks transcendence to the city-realm of dim Carcosa. Through a complex series of visualizations that expand the aspirants void-consciousness, the final age will arise. Ruled by the ominous King in Yellow, a new stage of reality will come to fruition. Of the Olde Ones, Hastur is considered to be one of the most difficult to work with, his teachings being reserved exclusively for the Cthonian Adepts and Lords.