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Magic: The Gathering Comprehensive Rules Changes

Masters Edition to Lorwyn (Single Change View)

General changes

Old rule (Masters Edition) New rule (Lorwyn)

212.1e.

If an instruction requires choosing a subtype, you must choose one, and only one, existing subtype, and the subtype you choose must be for the appropriate type. For example, you can't choose a land type if an instruction requires choosing a creature type. (Use the Oracle card reference to determine whether a creature type exists; see rule 200.2. You can also find complete lists of subtypes in the glossary at the end of this document under "Creature Types," "Land Types," etc.)

Example: When choosing a creature type, "Merfolk" or "Wizard" is acceptable, but "Merfolk Wizard" is not. Words like "artifact," "opponent," "Swamp," or "truck" can't be chosen because they aren't creature types.

212.1e.

If an instruction requires choosing a subtype, you must choose one, and only one, existing subtype, and the subtype you choose must be for the appropriate card type. For example, you can't choose a land type if an instruction requires choosing a creature type. (Use the Oracle card reference to determine whether a creature type exists; see rule 200.2. You can also find complete lists of subtypes in the glossary at the end of this document under "Creature Types," "Land Types," etc.)

Example: When choosing a creature type, "Merfolk" or "Wizard" is acceptable, but "Merfolk Wizard" is not. Words like "artifact," "opponent," "Swamp," or "truck" can't be chosen because they aren't creature types.