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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)

212.5a.

A player may play an instant card from his or her hand any time he or she has priority. Playing an instant as a spell uses the stack. (See rule 409, "Playing Spells and Activated Abilities.")

212.5a.

A player who has priority may play an instant card from his or her hand. Playing an instant as a spell uses the stack. (See rule 409, "Playing Spells and Activated Abilities.")