Disciple of Caelus Nin

Any continuous effects with a “for as long as” duration, such as that of Vodalian Mindsinger, ignore phased-out objects. Any such effects will expire if their conditions are no longer met after ignoring the phased-out objects.

If an effect causes a permanent to phase out “until” some event occurs, and that event occurs while Disciple of Caelus Nin is still on the battlefield, the phased out permanent stays phased out forever.

If Disciple of Caelus Nin itself phases out, other phased out permanents can phase back in normally while it is phased out. During its controller’s untap step, Caelus Nin and all other phased out permanents that player controls phase in at the same time.

Choices made for permanents as they entered the battlefield are remembered when they phase in.

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.

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.