A deck is a subset of the players collection of cards that a player plays with; it becomes that player’s library.

Deck ManagementEdit

This section is a stub. Please feel free to contribute and describe the in-game mechanics of creating and managing decks.

Comprehensive RulesEdit

Comprehensive Rules Glossary (April 17, 2020)

The collection of cards a player starts the game with; it becomes that player’s library. See rule 100, “General,” and rule 103, “Starting the Game.”

Comprehensive Rules (April 17, 2020)

  • 100.2. To play, each player needs their own deck of traditional Magic cards, small items to represent any tokens and counters, and some way to clearly track life totals.
    • 100.2a In constructed play (a way of playing in which each player creates their own deck ahead of time), each deck has a minimum deck size of 60 cards. A constructed deck may contain any number of basic land cards and no more than four of any card with a particular English name other than basic land cards.
    • 100.2b In limited play (a way of playing in which each player gets the same quantity of unopened Magic product such as booster packs and creates their own deck using only this product and basic land cards), each deck has a minimum deck size of 40 cards. A limited deck may contain as many duplicates of a card as are included with the product.
    • 100.2c Commander decks are subject to additional deckbuilding restrictions and requirements. See rule 903, “Commander,” for details.

Comprehensive Rules (April 17, 2020)

  • 100.4. Each player may also have a sideboard, which is a group of additional cards the player may use to modify their deck between games of a match.
    • 100.4a In constructed play, a sideboard may contain no more than fifteen cards. The four-card limit (see rule 100.2a) applies to the combined deck and sideboard.
    • 100.4b In limited play involving individual players, all cards in a player’s card pool not included in their deck are in that player’s sideboard.
    • 100.4c In limited play involving the Two-Headed Giant multiplayer variant, all cards in a team’s card pool but not in either player’s deck are in that team’s sideboard.
    • 100.4d In limited play involving other multiplayer team variants, each card in a team’s card pool but not in any player’s deck is assigned to the sideboard of one of those players. Each player has their own sideboard; cards may not be transferred between players.
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