Historical Rules · 25 August 2017
Rule 205.3n
Official source text from the 25 August 2017 Rules release
Planes have their own unique set of subtypes; these subtypes are called planar types. The planar types are Alara, Arkhos, Azgol, Belenon, Bolas’s Meditation Realm, Dominaria, Equilor, Ergamon, Fabacin, Innistrad, Iquatana, Ir, Kaldheim, Kamigawa, Karsus, Kephalai, Kinshala, Kolbahan, Kyneth, Lorwyn, Luvion, Mercadia, Mirrodin, Moag, Mongseng, Muraganda, New Phyrexia, Phyrexia, Pyrulea, Rabiah, Rath, Ravnica, Regatha, Segovia, Serra’s Realm, Shadowmoor, Shandalar, Ulgrotha, Valla, Vryn, Wildfire, Xerex, and Zendikar.