Friendly URLs: try https://vensersjournal.com/613 or 104.3a
At the start of a game, the players determine which one of them will choose who takes the first turn. In the first game of a match (including a single-game match), the players may use any mutually agreeable method (flipping a coin, rolling dice, etc.) to do so. In a match of several games, the loser of the previous game chooses who takes the first turn. If the previous game was a draw, the player who made the choice in that game makes the choice in this game. The player chosen to take the first turn is the starting player. The game's default turn order begins with the starting player and proceeds clockwise.
In a game using the shared team turns option, there is a starting team rather than a starting player.
In an Archenemy game, these methods aren't used to determine who takes the first turn. Rather, the archenemy takes the first turn.
One card (Power Play) states that its controller is the starting player. This effect applies after this determination has happened and supersedes these methods.
After the starting player has been determined, each player shuffles their deck so that the cards are in a random order. Each player may then shuffle or cut their opponents' decks. The players' decks become their libraries.
If a player is using a sideboard (see rule 100.4) or cards being represented by substitute cards (see rule 714), those cards are set aside before shuffling.
If a player wishes to reveal a card with a companion ability that they own from outside the game, they may do so after setting aside their sideboard. A player may reveal no more than one card this way, and they may do so only if their deck fulfills the condition of that card's companion ability. (See rule 702.139, "Companion.")
In a Commander game, each player puts their commander from their deck face up into the command zone after having the opportunity to reveal a card with a companion ability and before shuffling. See rule 903.6.
In a Conspiracy Draft game, each player puts any number of conspiracy cards from their sideboard into the command zone before shuffling. See rule 905.4.
Each player begins the game with a starting life total of 20. Some variant games have different starting life totals.
In a Two-Headed Giant game, each team's starting life total is 30.
In a Vanguard game, each player's starting life total is 20 plus or minus the life modifier of their vanguard card.
In a Commander game, each player's starting life total is 40.
In a two-player Brawl game, each player's starting life total is 25. In a multiplayer Brawl game, each player's starting life total is 30.
In an Archenemy game, the archenemy's starting life total is 40.
Each player draws a number of cards equal to their starting hand size, which is normally seven. (Some effects can modify a player's starting hand size.) A player who is dissatisfied with their initial hand may take a mulligan. First, the starting player declares whether they will take a mulligan. Then each other player in turn order does the same. Once each player has made a declaration, all players who decided to take mulligans do so at the same time. To take a mulligan, a player shuffles the cards in their hand back into their library, draws a new hand of cards equal to their starting hand size, then puts a number of those cards equal to the number of times that player has taken a mulligan on the bottom of their library in any order. Once a player chooses not to take a mulligan, the remaining cards become that player's opening hand, and that player may not take any further mulligans. This process is then repeated until no player takes a mulligan. A player can take mulligans until their opening hand would be zero cards, after which they may not take further mulligans.
In a Vanguard game, each player's starting hand size is seven plus or minus the hand modifier of their vanguard card.
If an effect allows a player to perform an action "any time [that player] could mulligan," the player may perform that action at a time they would declare whether they will take a mulligan. This need not be in the first round of mulligans. Other players may have already made their mulligan declarations by the time the player has the option to perform this action. If the player performs the action, they then declare whether they will take a mulligan.
In a multiplayer game and in any Brawl game, the first mulligan a player takes doesn't count toward the number of cards that player will put on the bottom of their library or the number of mulligans that player may take. Subsequent mulligans are counted toward these numbers as normal.
In a multiplayer game using the shared team turns option, first each player on the starting team declares whether that player will take a mulligan, then the players on each other team in turn order do the same. Teammates may consult while making their decisions. Then all mulligans are taken at the same time. A player may take a mulligan even after a teammate has decided to keep their opening hand.
Some cards allow a player to take actions with them from their opening hand. Once the mulligan process (see rule 103.4) is complete, the starting player may take any such actions in any order. Then each other player in turn order may do the same.
If a card allows a player to begin the game with that card on the battlefield, the player taking this action puts that card onto the battlefield.
If a card allows a player to reveal it from their opening hand, the player taking this action does so. The card remains revealed until the first turn begins. Each card may be revealed this way only once.
In a multiplayer game using the shared team turns option, first each player on the starting team, in whatever order that team likes, may take such actions. Teammates may consult while making their decisions. Then each player on each other team in turn order does the same.
In a Planechase game, the starting player moves the top card of their planar deck off that planar deck and turns it face up. If it's a phenomenon card, the player puts that card on the bottom of their planar deck and repeats this process until a plane card is turned face up. The face-up plane card becomes the starting plane. (See rule 901, "Planechase.")
The starting player takes their first turn.
In a two-player game, the player who plays first skips the draw step (see rule 504, "Draw Step") of their first turn.
In a Two-Headed Giant game, the team who plays first skips the draw step of their first turn.
In all other multiplayer games, no player skips the draw step of their first turn.