Daytime Mists

In the Mistborn Era 1 series, the Daytime Mists emerge as a terrifying harbinger of apocalypse, first appearing in The Well of Ascension as thick, gray-white vapors that linger progressively earlier into daylight, flowing in eerie river-like patterns and afflicting non-Allomancers with lethal seizures and sickness. By The Hero of Ages, these mists intensify, twisting into ominous tendrils that selectively cull humanity while granting immunity after a single deadly exposure, ultimately revealing their role in Ruin's cataclysmic plan to reshape the world. This evolution transforms the mists from a mysterious anomaly into a pivotal force driving the series' apocalyptic climax.