Rule evolution
Rule 703.4a
Earliest archived Rules release: 2009-10-01 · 0 wording revisions · 0 renumberings
Earliest archived Rules release703.4aDetails
Immediately after the untap step begins, all phased-in permanents with phasing that the active player controls phase out, and all phased-out permanents that the active player controlled when they phased out phase in. This all happens simultaneously. See rule 502.1.