History of CR 104.3a
Every distinct wording since 2010, newest first.
April 27, 2018 · Dominaria
A player can concede the game at any time. A player who concedes leaves the game immediately. That player loses the game.
September 30, 2011 · Innistrad
A player can concede the game at any time. A player who concedes leaves the game immediately. He or she loses the game.
June 17, 2011 · Commander 2011
A player can concede the game at any time. A player who concedes leaves the game
February 4, 2011 · Mirrodin Besieged
A player can concede the game at any time. A player who concedes leaves the game immediately. He or she loses the game.
October 1, 2010 · Scars of Mirrodin
A player can concede the game at any time. A player who concedes leaves the game
February 1, 2010 · Worldwake
A player can concede the game at any time. A player who concedes leaves the game immediately. He or she loses the game.