Historical Rules · 25 August 2017
Rule 302.3
Official source text from the 25 August 2017 Rules release
Creature subtypes are always a single word and are listed after a long dash: “Creature — Human Soldier,” “Artifact Creature — Golem,” and so on. Creature subtypes are also called creature types. Creatures may have multiple subtypes. See rule 205.3m for the complete list of creature types. Example: “Creature — Goblin Wizard” means the card is a creature with the subtypes Goblin and Wizard.