at the beginning of your upkeep, choose one —
• each player with exactly 13 life loses the game, then each player gains 1 life.
• each player with exactly 13 life loses the game, then each player loses 1 life.
• each player with exactly 13 life loses the game, then each player gains 1 life.
• each player with exactly 13 life loses the game, then each player loses 1 life.
