History of CR 602.5
Every distinct wording since 2010, newest first.
May 3, 2019 · War of the Spark
A player can’t begin to activate an ability that’s prohibited from being activated.
January 25, 2019 · Ravnica Allegiance
A player can't begin to activate an ability that's prohibited from being activated.
February 1, 2014 · Born of the Gods
A player can’t begin to activate an ability that’s prohibited from being activated.
September 30, 2011 · Innistrad
A player can't begin to activate an ability that's prohibited from being activated.
June 17, 2011 · Commander 2011
A player can’t begin to activate an ability that’s prohibited from being activated.
April 1, 2011 · Duel Decks: Knights vs. Dragons
A player can't begin to activate an ability that's prohibited from being activated.
October 1, 2010 · Scars of Mirrodin
A player can’t begin to activate an ability that’s prohibited from being activated.
February 1, 2010 · Worldwake
A player can't begin to activate an ability that's prohibited from being activated.