Fight or Flight | Magic: The Gathering
Formats Fight or Flight is Legal in
Official Oracle Text for Fight or Flight
Official Rulings for Fight or Flight
8/1/2008 : If you have two of these, then you will separate the creatures into piles twice, and the opponent will choose a pile each time. Only creatures that were in both of the chosen piles can attack.
8/1/2008 : The effect is best understood if you read it as "creatures not in the chosen pile can't attack."