Whenever chaos ensues, for each opponent, choose up to one target nonland permanent that opponent controls. Untap those permanents. They phase out. They can't phase in for as long as The Doctor's Childhood Barn remains face up. When a player planeswalks, those permanents phase in.
While a permanent is phased out, it's treated as though it doesn't exist. It can't be the target of spells or abilities, its static abilities have no effect on the game, its triggered abilities can't trigger, it can't attack or block, and so on.
2023-10-13
wotc
Phasing out doesn't cause any "leaves the battlefield" abilities to trigger. Similarly, phasing in won't cause any "enters the battlefield" abilities to trigger.
2023-10-13
wotc
Each Aura and Equipment attached to a permanent that's phasing out also phases out. They will phase in with that permanent and still be attached to it. Similarly, permanents that phase out with counters phase in with those counters.
2023-10-13
wotc
Choices made for permanents as they entered the battlefield are remembered when they phase in.
2023-10-13
wotc
Any one-shot effects that are waiting "until [this] leaves the battlefield," won't happen when a permanent phases out.
2023-10-13
wotc
Any continuous effects with a "for as long as" duration ignore phased-out objects. Any such effects will expire if their conditions are no longer met after ignoring the phased-out objects.
2023-10-13
wotc
A permanent phased out by The Doctor's Childhood Barn phases in during its controller's untap step as normal only if The Doctor's Childhood Barn is no longer face up. (This situation may occur in rare instances if the delayed triggered ability that would normally cause those permanents to phase in immediately is countered.)
Format Legality
Standard
Not Legal
Future
Not Legal
Historic
Not Legal
Timeless
Not Legal
Gladiator
Not Legal
Pioneer
Not Legal
Modern
Not Legal
Legacy
Not Legal
Pauper
Not Legal
Vintage
Not Legal
Penny
Not Legal
Commander
Not Legal
Oathbreaker
Not Legal
Standardbrawl
Not Legal
Brawl
Not Legal
Alchemy
Not Legal
Paupercommander
Not Legal
Duel
Not Legal
Oldschool
Not Legal
Premodern
Not Legal
Predh
Not Legal
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