History of CR 610.4b

Every distinct wording since 2010, newest first.

August 7, 2020 · Double Masters
If a resolving spell or activated ability creates the initial one-shot effect that causes the permanent to phase out, and the specified event has already occurred before that one-shot effect would occur but after that spell or ability was put onto the stack, the permanent doesn’t phase out.
February 1, 2010 · Worldwake
rule 610.4b not present in this release