The Countdown Is at One
Oracle Text
Players play a Magic subgame, starting at 1 life and using their libraries as their decks. For the rest of the main game, if a source would deal damage to a player who didn't win the subgame, it deals double that damage to that player instead.
Card Rulings
1/19/2018 To play a Magic subgame, all players start a new game, using their libraries as their decks. No other cards, tokens, emblems, or anything else from the main game are included in the subgame.
1/19/2018 If a player has fewer than seven cards in their main-game library, they’ll lose the subgame as it begins, regardless of how many mulligans that player takes.
1/19/2018 If the subgame is a draw, no player won the subgame, so damage dealt to any player in the main game will be doubled.
1/19/2018 After the subgame ends, all players shuffle their cards from the subgame to reform their main-game libraries, and they return to the main game from the point they left off, with The Countdown Is at One finishing resolving.
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