104.2a A player still in the game wins the game if that player’s opponents have all left the game. This happens immediately and overrides all effects that would preclude that player from winning the game.
104.2c In a multiplayer game between teams, a team with at least one player still in the game wins the game if all other teams have left the game. Each player on the winning team wins the game, even if one or more of those players had previously lost that game.
104.3b If a player’s life total is 0 or less, that player loses the game the next time a player would receive priority. (This is a state-based action. See rule 704.)
104.3c If a player is required to draw more cards than are left in their library, they draw the remaining cards and then lose the game the next time a player would receive priority. (This is a state-based action. See rule 704.)
104.3d If a player has ten or more poison counters, that player loses the game the next time a player would receive priority. (This is a state-based action. See rule 704.)
104.3h In a multiplayer game using the limited range of influence option (see rule 801), an effect that states that a player wins the game instead causes all of that player’s opponents within the player’s range of influence to lose the game. This may not cause the game to end.
104.3j In a Commander game, a player who’s been dealt 21 or more combat damage by the same commander over the course of the game loses the game. (This is a state-based action. See rule 704. See also rule 903.10.)
104.4b If a game that’s not using the limited range of influence option (including a two-player game) somehow enters a “loop” of mandatory actions, repeating a sequence of events with no way to stop, the game is a draw. Loops that contain an optional action don’t result in a draw.
104.4e In a multiplayer game using the limited range of influence option, the effect of a spell or ability that states that the game is a draw causes the game to be a draw for that spell or ability’s controller and all players within their range of influence. Only those players leave the game; the game continues for all other players.
104.4f In a multiplayer game using the limited range of influence option, if the game somehow enters a “loop” of mandatory actions, repeating a sequence of events with no way to stop, the game is a draw for each player who controls an object that’s involved in that loop, as well as for each player within the range of influence of any of those players. Only those players leave the game; the game continues for all other players.
104.5 If a player loses the game, that player leaves the game. If the game is a draw for a player, that player leaves the game. The multiplayer rules handle what happens when a player leaves the game; see rule 800.4.
104.6 One card (Karn Liberated) restarts the game. All players still in the game when it restarts then immediately begin a new game. See rule 727, “Restarting the Game.”