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Day and night are designations that a game of Magic: The Gathering can have, which changes the behavior or even the identity of certain cards, particularly those with daybound and nightbound. Either day or night is first applied to a game when a relevant card is played, and subsequently the two designations alternate back and forth based on the number of spells cast each turn, or by specific effects. Day and night were introduced in Innistrad: Midnight Hunt, as a refinement of mechanics which first appeared in Innistrad.[1][2]

Description[]

When the game starts, it's neither day nor night. In most games in which the mechanic is used at all, it will become day first. The most common way that will happen is if a permanent with daybound appears on the battlefield. It may become night first through the effect of one of two spells (Unnatural Moonrise and Into the Night). After it becomes day or night, the game automatically begins checking if it will switch between day and night each turn based on the number of spells cast in the previous turn, creating an ongoing cycle between the two designations. It can also switch one way or the other due to specific abilities.

Once it's day or night, the game will be exactly one of those designations, day or night, going back and forth until the game ends. It can never return to being neither. Day, night, and transitions between them apply to the entire game, not just one player at a time or to each player separately.

While any card can care about day or night, daybound and nightbound double-faced cards are the most closely connected to the cycle. If it's day, each will enter the battlefield with its daybound face up. If it's night, each will enter nightbound face up. As it becomes day, all double-faced cards with nightbound transform to their daybound faces, and vice versa. In other words, these double-faced cards are always in sync, no matter who controls them.

Once the day/night cycle begins, the game rules check each untap step for a condition to be met, which will automatically cause day to turn to night or back again:

  • If it's day as a turn begins, and the previous turn's active player didn't cast a spell last turn, it becomes night.
  • If it's night as a turn begins, and the previous turn's active player cast two or more spells last turn, it becomes day.

These conditions are close to the triggered abilities of Werewolf double-faced cards printed in Innistrad block and Shadows over Innistrad block. The biggest difference is that only spells cast by the active player in the previous turn count for the condition, rather than spells cast by all players. A smaller one is that this change and corresponding transformations happen during the untap step all at once, whereas the earlier abilities triggered separately during upkeep.

Another way the day/night designation can change is when cards have effects that simply say it becomes day or night. This can happen at any point in the turn when the effect says so.

A number of cards have triggered abilities which trigger when day becomes night or night becomes day. Since this event usually happens during the untap step when no players get priority, in those cases the abilities go on the stack at the beginning of the upkeep step.

Helper card[]

To help keep track of day and night, some Innistrad: Midnight Hunt products provided a two-sided helper card that reminds players of these rules.

Day marker Night marker

Rules[]

From the glossary of the Comprehensive Rules (November 19, 2021—Innistrad: Crimson Vow)

Day
Along with night, a designation the game can have. See rule 724, “Day and Night,” and rule 702.145, “Daybound and Nightbound.”

From the glossary of the Comprehensive Rules (November 19, 2021—Innistrad: Crimson Vow)

Night
Along with day, a designation the game can have. See rule 724, “Day and Night,” and rule 702.145, “Daybound and Nightbound.”

From the Comprehensive Rules (November 19, 2021—Innistrad: Crimson Vow)

  • 724. Day and Night
    • 724.1. Day and night are designations that the game itself can have. The game starts with neither designation. “It becomes day” and “it becomes night” refer to the game gaining the day or night designation. It can become day or night through the daybound and nightbound keyword abilities (see rule 702.145). Other effects can also make it day or night. Once it has become day or night, the game will have exactly one of those designations from that point forward.
      • 724.1a The phrases “day becomes night” and “night becomes day” refer to the game losing the first designation and gaining the second one.
    • 724.2. As the second part of the untap step, the game checks the previous turn to see if the game’s day/night designation should change. See rule 502, “Untap Step.”
      • 724.2a If it’s day and the previous turn’s active player didn’t cast any spells during that turn, it becomes night. Multiplayer games using the shared team turns option (see rule 805) use a modified rule: if it’s day and no player from the previous turn’s active team cast a spell during that turn, it becomes night.
      • 724.2b If it’s night, and previous turn’s active player cast two or more spells during the previous turn, it becomes day. Multiplayer games using the shared team turns option (see rule 805) use a modified rule: if it’s night and any player from the previous turn’s active team cast two or more spells during that turn, it becomes day.
      • 724.2c If it’s neither day nor night, this check doesn’t happen and it remains neither.

References[]

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