Cosmology

The Arrean cosmology has a total of twenty-nine planes, not including as yet undiscovered demiplanes.

Material Plane: The Material Plane encompasses the actual planet of Arrea as well as the multiple planets that are visible in the heavens.

Four Transitive Planes: The Arrean cosmology contains the Ethereal Plane, the Astral Plane, the Faerie Plane, and the Plane of Shadow. These planes function as described in the core rulebooks.

Six Inner Planes: Four elemental planes and two energy planes are part of the Arrean cosmology. The elemental planes are for the classic elements; air, earth, fire, and water, while the energy planes embody positive and negative energy.

Seventeen Outer Planes: These aligned planes are the homes of various deities and outsiders, and they often have many layers. Each of these planes function as described in the Manual of the Planes. The Outer Planes are:

	Heroic Domains of Ysgard
	Ever-Changing Chaos of Limbo
	Windswept Depths of Pandemonium
	Infinite Layers of the Abyss
	Tarterian Depths of Carceri
	Gray Waste of Hades
	Bleak Eternity of Gehenna
	Nine Hells of Baator
	Infernal Battlefield of Acheron
	Clockwork Nirvana of Mechanus
	Peaceable Kingdoms of Arcadia
	Seven Mounting Heavens of Celestia
	Twin Paradises of Bytopia
	Blessed Fields of Elysium
	Wilderness of the Beastlands
	Olympian Glades of Arborea
	Concordant Domain of the Outlands

One Deep Plane: The Deep Plane of the Arrean cosmology is the Far Realm. Very little is known about this plane.

Demiplanes: The Arrean cosmology contains a near infinite number of finite demiplanes.

Assembling the Arrean Cosmology

The Arrean cosmology consists of the following elements and arrangements.

	The Material Plane is at its center.
	The Plane of Shadow, the Ethereal Plane, and the Faerie Plane are coexistent with the Material Plane. The Faerie Plane is also coexistent with the Plane of Shadow. The Plane of Shadow and Faerie Plane, however, do not touch the Ethereal Plane. All planes are coexistent with the Astral Plane, which envelops the whole inner cosmology like a cloud.
	The six Inner Planes surround the Material Plane. They are separate from the Material Plane and from each other. They are each coexistent with the Astral Plane. Each of the Inner Planes has the appropriate elemental of energy trait.
	The Outer Planes are arranged in a wheel around the Material Plane. Each Outer Plane is coterminous with the planes on either side of it but separate from the other Outer Planes. The exception to this is the Concordant Domain of the Outlands, which is coterminous with every other Outer Plane and thus a central hub for dealings between outsiders.
	The Outer Planes are coexistent with the Astral Plane. They are separate from the Ethereal Plane, the Faerie Plane, and the Plane of Shadow, so these are limitations to accessing certain spells while on the Outer Planes. The Outer Planes are made up of related layers, and the most common access is through the top layer of each plane. The good-aligned planes, also called the celestial planes, are linked by the path of the River Oceanus, while the evil-aligned infernal planes are linked by the path of the River Styx.
	The Far Realm surrounds and envelops the Astral Plane, just as the Astral Plane surrounds the rest of the cosmology. The Far Realm is coterminous with the Deep Ethereal and the Astral Plane.
	The region of Dreams is not a full plane, but is a region in the Astral Plane that is coexistent with the Astral Plane and the Material Plane.