Unglued cards with a silver border are disallowed.

New card sets become effective on the 20th day of the month of their introduction.

Optional 'sideboard'. If you have one, it must be exactly 15 cards.

No more than 4 of any card which is not a basic land can be in the combination of deck and sideboard. Cards with different art or in different languages or from different prints but which are the same card are considered the same.