affected player’s team’s turn.
606.6h If an effect instructs more than one player to draw cards in a Two-Headed Giant game, first the primary player on the active team performs all of his or her draws, then the secondary player on that team performs all of his or her draws, then the nonactive team does the same.
606.7. The Two-Headed Giant variant uses different combat rules than other multiplayer variants.
606.7a Each team’s creatures attack the other team as a group. During the combat phase, the active team is the attacking team and each player on the active team is an attacking player. Likewise, the nonactive team is the defending team and each player on the nonactive team is a defending player.
606.7b. As the declare attackers step begins, the active team declares attackers. If a creature is unable to attack one of the defending players, that creature can’t attack the defending team. The active team has one combined attack, and that set of attacking creatures must be legal as a whole.
Example: One player in a Two-Headed Giant game controls Teferi’s Moat, which says “As Teferi’s Moat comes into play, choose a color. / Creatures of the chosen color without flying can’t attack you.” Creatures of the chosen color without flying can’t attack that player’s team.
606.7c As the declare blockers step begins, the defending team declares blockers. Creatures controlled by the defending players can block any attacking creatures. The defending team has one combined block, and that set of blocking creatures must be legal as a whole.
Example: If an attacking creature has forestwalk and either player on the defending team controls a Forest, the creature can’t be blocked.
606.7d As the combat damage step begins, the active team announces how each attacking creature will assign its combat damage. If an attacking creature would assign combat damage to the defending team, the active team chooses only one of the defending players for that creature to assign its combat damage to. Then the defending team announces how each blocking creature will assign its combat damage.
606.8. The Two-Headed Giant variant uses the normal rules for winning or losing the game (see rule 102), with the following additions.
606.8a If a team’s life total is 0 or less, the team loses the game the next time a team would receive priority. (This is a state-based effect. See rule 420.)
606. 8b Players win and lose the game only as a team, not as individuals. If either player on a team loses the game, the team loses the game. If either player on a team wins the game, the entire team wins the game. If an effect would prevent a player from winning the game, that player’s team can’t win the game. If an effect would prevent a player from losing the game, that player’s team can’t lose the game.
Example: In a Two-Headed Giant game, a player controls Transcendence, which reads, in part, “You don’t lose the game for having 0 or less life.” If that player’s team’s life total is 0 or less, that team doesn’t lose the game.
Example: In a Two-Headed Giant game, a player attempts to draw a card while there are no cards in that player’s library. That player loses the game, so that player’s entire team loses the game.
Example: In a Two-Headed Giant game, a player controls Platinum Angel, which reads, “You can’t lose the game and your opponents can’t win the game.” Neither that player nor his or her teammate can lose the game while Platinum Angel is in play, and neither player on the opposing team can win the game.
606.8c If a player concedes, his or her team loses the game.
606.9. Damage, loss of life, and gaining life happen to each player individually. The result is applied to the team’s shared life total.
Example: In a Two-Headed Giant game, a player plays Flame Rift, which reads, “Flame Rift deals 4 damage to each player.” Each team is dealt a total of 8 damage.
606.9a If an effect needs to know the value of an individual player’s life total, that effect uses the team’s life total divided by two, rounded up, instead.
Example: In a Two-Headed Giant game, a team is at 17 life when a player activates Heartless Hidetsugu’s ability, which reads, “Heartless Hidetsugu deals to each player damage equal to half that player’s life total, rounded down.” For the purposes of this ability, each player on that team is considered to be at 9 life. Heartless Hidetsugu deals 4 damage to each of those players, for a total of 8 damage. The team will end up at 9 life.
Example: In a Two-Headed Giant game, a player controls Test of Endurance, an enchantment that reads, “At the beginning of your upkeep, if you have 50 or more life, you win the game.” At the beginning of your upkeep, the player’s team wins the game only if his or her share of the team’s life total is 50 or more. The team’s life total must be 99 or more for that to happen.
Example: In a Two-Headed Giant game, a player controls Lurking Jackals, which reads, “When an opponent has 10 life or less, if Lurking Jackals is an enchantment, it becomes a 3/2 Hound creature.” If the opposing team has 22 life and 1 damage to a particular opponent, Lurking Jackals won’t become a creature. The
