Historical Rules · 1 October 2009
Rule 204.3m
Official source text from the 1 October 2009 Rules release
Planes have their own unique set of subtypes; these subtypes are called planar types. The planar types are Alara, Arkhos, Bolas's Meditation Realm, Dominaria, Equilor, Iquatana, Ir, Kaldheim, Kamigawa, Lorwyn, Mercadia, Mirrodin, Moag, Muraganda, Phyrexia, Rabiah, Rath, Ravnica, Segovia, Serra's Realm, Shadowmoor, Shandalar, Ulgrotha, Valla, Wildfire, and Zendikar.