History of CR 809.4
Every distinct wording since 2010, newest first.
May 3, 2019 · War of the Spark
Randomly determine which emperor goes first. Turn order goes to the players’ left.
January 25, 2019 · Ravnica Allegiance
Randomly determine which emperor goes first. Turn order goes to the players' left.
February 1, 2014 · Born of the Gods
Randomly determine which emperor goes first. Turn order goes to the players’ left.
September 30, 2011 · Innistrad
Randomly determine which emperor goes first. Turn order goes to the players' left.
June 17, 2011 · Commander 2011
Randomly determine which emperor goes first. Turn order goes to the players’ left.
April 1, 2011 · Duel Decks: Knights vs. Dragons
Randomly determine which emperor goes first. Turn order goes to the players' left.
October 1, 2010 · Scars of Mirrodin
Randomly determine which emperor goes first. Turn order goes to the players’ left.
June 18, 2010 · Archenemy
Randomly determine which emperor goes first. Turn order goes to the players' left.
February 1, 2010 · Worldwake
A player can't attack opponents who aren't seated next to him or her.