Magic: The Gathering Comprehensive Rules Changes - Future Sight to Core Set - Tenth Edition

Old rule (Future Sight)	New rule (Core Set - Tenth Edition)
506.1. → 506.1a. [Click to view all changes.]
506.1. Some cards allow players to play a Magic subgame. A "subgame" is the game created by the card's effect. The "main game" is the game in which the spell or ability that created the subgame was played. The main game is temporarily discontinued while the subgame is in progress. It resumes when the subgame ends.	506.1a. A "subgame" is a completely separate Magic game created by a card's effect. The "main game" is the game in which the spell or ability that created the subgame was played. The main game is temporarily discontinued while the subgame is in progress. It resumes when the subgame ends.

Old rule (Future Sight)

New rule (Core Set - Tenth Edition)

506.1. → 506.1a. [Click to view all changes.]

506.1.

Some cards allow players to play a Magic subgame. A "subgame" is the game created by the card's effect. The "main game" is the game in which the spell or ability that created the subgame was played. The main game is temporarily discontinued while the subgame is in progress. It resumes when the subgame ends.

506.1a.

A "subgame" is a completely separate Magic game created by a card's effect. The "main game" is the game in which the spell or ability that created the subgame was played. The main game is temporarily discontinued while the subgame is in progress. It resumes when the subgame ends.