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Magic: The Gathering Comprehensive Rules Changes

Coldsnap to Time Spiral (Single Change View)

General changes

Old rule (Coldsnap) New rule (Time Spiral)

413.2c.

If an effect offers any choices other than choices already made as part of playing the spell or ability, the player announces these while applying the effect. The player can't choose an option that's illegal or impossible. (For example, a player can't avoid the consequences of not taking an optional action if he or she can't meet all the immediate requirements of that action.)

Example: A spell's instruction reads, "You may sacrifice a creature. If you don't, you lose 4 life." A player who controls no creatures can't choose the sacrifice option.

413.2c.

If an effect offers any choices other than choices already made as part of playing the spell or ability, the player announces these while applying the effect. The player can't choose an option that's illegal or impossible. (For example, a player can't avoid the consequences of not taking an optional action if he or she can't meet all the immediate requirements of that action.) Drawing a card is never considered an impossible action, even if there are no cards in the affected player's library.

Example: A spell's instruction reads, "You may sacrifice a creature. If you don't, you lose 4 life." A player who controls no creatures can't choose the sacrifice option.