Plane/Storyline

There are almost infinite planes in the multiverse, separated from each other by the space known as the Blind Eternities, which is filled with chaotic energies, including Aether and mana. The inhabitants of most of these planes have no idea that theirs is not the only universe, or indeed the only worldgenerally only planeswalkers know that and are able to travel intentionally between planes.

Description
Although Planes are sometimes thought to be a separate world occupying the same universe as other planes, each plane is a separate universe in its own right. Each has its own sun and a few planes have multiple worlds, possibly with some inhabitable ones. With the exception of artificial planes, most if not all planes can be considered more akin to alternate realities, with Dominaria - previously the center of Multiverse - being the prime reality. However, these realities are usually very different from each other, suggesting that planeswalkers cannot planeswalk between planes that are too similar.

Planes are known to "move" in relation to each other. Additionally, new planes are constantly created, while others drift out of existence. According to Vivien Reid, each has a different starry sky. Sometimes the stars are colored like a rainbow. Sometimes they move, every night, as though they were giant fireflies. The Ten Realms of Kaldheim are constantly shifting and moving around the World Tree and can even collide. Such an epic event is called a "doomskar" and causes earthquakes, destabilization, and total chaos. The plane of Arcavios was also formed by a collision of two planes and still has two suns.

Natural planes
Natural planes are naturally occurring worlds that came into existence at some point. Most known planes have one central, populated world, that the entire plane is typically named after. However, it is possible that in vast universes with billions of galaxies and stars, other populated worlds also exist.

Worldsoul
A Worldsoul is the aware essence of a plane. One can be hurt magically, or manifest itself in various forms. Some magical abilities such as those of Nissa Revane may allow communication with a plane's Worldsoul.

Artificial planes
There are also artificial planes, worlds created usually by planeswalkers by sheer will. The creator of such a world defines all of its rules. These planes are unstable and eventually collapse if there is nothing to sustain their existence (like a constant flow of mana, or technical means such as flowstone). These planes are most likely surrounded by an amount of real space that prevents them from being destroyed by the Blind Eternities. However, this pocket of space eventually wears out, after which the Blind Eternities destroy the plane.

Named planes
• Alara

• Alkabah

• Amonkhet

• Antausia

• Aranzhur

• Arcavios

• Arkhos

• Azgol

• Azoria

• Belenon

• Cabralin

• Cridhe

• Diraden

• Dominaria

• Echoir

• Eldraine

• Equilor

• Ergamon

• Fabacin

• Fiora

• Gargantikar

• Gastal

• Gobakhan

• Hell /The Abyss

• Ikoria

• Ilcae

• Innistrad

• Iquatana

• Ir

• Ixalan

• Kaladesh

• Kaldheim

• Kamigawa

• Karsus

• Kephalai

• Kinshala

• Kodisha

• Kolbahan

• Kylem

• Kyneth

• Lorwyn–Shadowmoor

• Luvion

• Meditation Plane

• Mercadia

• Metal Island

• Mirrankkar

• Moag

• Mongseng

• Muraganda

• Nether Void

• New Phyrexia / Mirrodin / Argentum

• Obsidias

• Phyrexia

• Plane of Mountains and Seas

• Pyrulea

• Rabiah

• Rath

• Ravnica

• Regatha

• Segovia

• Serra's Realm

• Seven planes of Parnash

• Shandalar

• Skalla

• Tarkir

• Tavelia

• Theros

• Tolvada

• Ulgrotha

• Valla

• Vatraquaz

• Vryn

• Wildfire

• Xerex

• Zendikar

Unnamed planes
Visited in the storyline, but not named
 * Elspeth's homeplane
 * Garruk's homeplane
 * Kothophed's plane
 * Ob Nixilis homeplane
 * Oko's homeplane
 * The plane of the Infinite Consortium's Iron Tower.
 * The plane that Lukka planeswalked to for the first time.
 * The plane that Ral Zarek planeswalked to for the first time.
 * The plane that Vraska planeswalked to for the first time.
 * The unknown destroyed plane by Eldrazi, visited by Sorin Markov and Nahiri.