Wairos

Wairos is a fictional entity appearing in the fantasy novel "The Final Empire" by Brandon Sanderson. It is a sentient, magical being, a vestige of the Lord Ruler's original power. Wairos is not a physical creature in the traditional sense but exists as an incorporeal consciousness. It resides within the Well of Ascension, a powerful artifact that serves as a reservoir of the Mists' magic and the Lord Ruler's influence. The entity is characterized by its immense power and its connection to the foundational magics of the world.

During the events of "The Final Empire," the protagonist Vin enters the Well of Ascension and encounters Wairos. The entity communicates with Vin through a form of telepathy, offering her knowledge and power. However, Wairos's motives are complex and potentially manipulative, stemming from its deep-seated loyalty to the Lord Ruler and its inherent desire to preserve the established order. Its nature is deeply intertwined with the history and magical systems of the Final Empire, making it a significant, albeit enigmatic, force. The ultimate fate and purpose of Wairos are explored further in subsequent novels of the Mistborn series.