Historical Rules · 16 July 2010
Rule 204.3m
Official source text from the 16 July 2010 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, Karsus, Lorwyn, Luvion, Mercadia, Mirrodin, Moag, Muraganda, Phyrexia, Pyrulea, Rabiah, Rath, Ravnica, Segovia, Serra's Realm, Shadowmoor, Shandalar, Ulgrotha, Valla, Wildfire, and Zendikar.