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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)

308.2a.

The active player either chooses to not attack, or chooses one or more creatures he or she controls and then determines whether this set of creatures could attack. Only creatures can attack, and the following creatures can't attack: tapped creatures (even those that can attack without tapping) and creatures the active player didn't control continuously since the beginning of the turn (except those with haste). Other effects may also affect whether or not a set of creatures could attack. (See rule 500, "Legal Attacks and Blocks.")

308.2a.

For each untapped creature the active player controls that he or she has controlled continuously since the beginning of the turn or that has haste, that player either chooses not to attack with it, or chooses an opponent or a planeswalker controlled by an opponent for that creature to attack. Then he or she determines whether this set of attackers is legal. (See rule 500, "Legal Attacks and Blocks.")