Core Set Constructed is a specialty Magic Online format, which allows cards from every Core Set on Magic Online. Currently, this is Magic 2013 (M13).
As in most constructed formats, a player’s deck may not contain more than four copies of any individual card. Players' decks must contain a minimum of 60 cards in the main deck, and and an optional sideboard must contain exactly 15 cards if used.
There are no cards banned in Core Set Constructed.