Historical Rules · 1 September 2023
Rule 110.4
Official source text from the 1 September 2023 Rules release
There are six permanent types: artifact, battle, creature, enchantment, land, and planeswalker. Instant and sorcery cards can’t enter the battlefield and thus can’t be permanents. Some tribal cards can enter the battlefield and some can’t, depending on their other card types. See section 3, “Card Types.”