The Plane of Chaos

The Plane of Chaos is the overarching plane of existence in which the outer planes exist, they all influence the residents of the Material Plane but within the Plane of Chaos all of these planes congeal and make home to hybrid formless creatures and hide beings of old magic and the unknown. Chaos is also known as the abyss and is a plane that people often dispute the purpose of, some who call it chaos believe it is a plane that acts as a mediator, something to help balance out the powers of the planes and how much they effect the Material Plane, possibly being home to great old gods of balance and order, but some who call it the abyss believe it is a primordial pool of darkness that predates any of the living deities and exists to challenge natural order in a more harmful way, hiding away ancient knowledge and gods that would threaten the very existence of the Material Plane.