The primordial power of creation that once existed as a unified force in the Cosmere. Adonalsium was shattered in an ancient event by sixteen individuals who each took up a portion of its power, becoming the Shards. The nature of Adonalsium - whether it was a god, a force, or something else entirely - remains one of the deepest mysteries of the Cosmere. The Shattering is the foundational event that shaped all subsequent history across every world.