The Crimson Mists are a supernatural phenomenon native to Tayira. They are produced by the Crimson Sea, but can periodically extend way beyond those waters and cover almost all of the continent. These mists are toxic, and most people can't survive more than a few minutes in a high concentration without magical or technological assistance. A special kind of mask, known as a Cleansing Mask, can enable someone to breathe regularly in these. Additionally, the mists seem to have other magical properties. Monsters are drawn and apparently summoned by them, and arcane magic is said to attract them.