History of CR 901.9a
Every distinct wording since 2010, newest first.
July 1, 2012 · Magic 2013
If the die roll is a blank face, nothing happens. The active player gets priority.
September 30, 2011 · Innistrad
If a plane leaves the game while a "planeswalking ability" for which it was the source is on the stack, that ability ceases to exist.
June 17, 2011 · Commander 2011
If a plane leaves the game while a “planeswalking ability” for which it was the source is on
April 1, 2011 · Duel Decks: Knights vs. Dragons
If a plane leaves the game while a "planeswalking ability" for which it was the source is on the stack, that ability ceases to exist.
February 4, 2011 · Mirrodin Besieged
If a plane leaves the game while a “planeswalking ability” for which it was the source is on the stack, that ability ceases to exist.
October 1, 2010 · Scars of Mirrodin
If a plane leaves the game while a “planeswalking ability” for which it was the source is on
February 1, 2010 · Worldwake
If a plane leaves the game while a "planeswalking ability" for which it was the source is on the stack, that ability ceases to exist.