Rule 469.1.a
In Modes of Play with teammates, Battlefields under the Control of a teammate during the scoring step of the Beginning Phase of a player’s turn are also disqualified from being Scored through Conquer by any means by that player’s team.
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In Modes of Play with teammates, Battlefields under the Control of a teammate during the scoring step of the Beginning Phase of a player’s turn are also disqualified from being Scored through Conquer by any means by that player’s team.