Historical Rules · 1 June 2014
Rule 305.5
Official source text from the 1 June 2014 Rules release
Land subtypes are always a single word and are listed after a long dash. Land subtypes are also called land types. Lands may have multiple subtypes. See rule 205.3i for the complete list of land types. Example: “Basic Land — Mountain” means the card is a land with the subtype Mountain.