History of CR 115.7b

Every distinct wording since 2010, newest first.

July 12, 2019 · Core Set 2020
If an effect allows a player to “change a target” of a spell or ability, the process described in rule 115.7a is followed, except that only one of those targets may be changed (rather than all of them or none of them).
February 1, 2010 · Worldwake
rule 115.7b not present in this release