MTR 3.9 Card Shuffling

Decks must be randomized at the start of every game and whenever an instruction requires it. Randomization is defined as bringing the deck to a state where no player can have any information regarding the order or position of cards in any portion of the deck.

Pile shuffling alone is not sufficiently random and may not be performed other than once at the beginning of a game to count the cards in the deck.

Once the deck is randomized, it must be presented to an opponent. By this action, players state that their decks are legal and randomized. The opponent may then shuffle it additionally. Cards and sleeves must not be in danger of being damaged during this process.

If the opponent does not believe the player made a reasonable effort to randomize his or her deck, the opponent must notify a judge.

Players may request to have a judge shuffle their cards rather than the opponent; this request will be honored only at a judge’s discretion.

If a player has had the opportunity to see any of the card faces of the deck being shuffled, the deck is no longer considered randomized and must be randomized again.

At Competitive and Professional Rules Enforcement Level tournaments, players are required to shuffle their opponents’ decks after their owners have shuffled them. The Head Judge can require this at Regular Rules Enforcement Level tournaments as well.