History of CR 500.4
Every distinct wording since 2010, newest first.
November 14, 2025 · Avatar: The Last Airbender
As a step or phase begins, if there are effects that last until that step or phase, those effects expire.
May 3, 2019 · War of the Spark
When a step or phase ends, any unused mana left in a player’s mana pool empties. This turn-based action doesn’t use the stack.
January 25, 2019 · Ravnica Allegiance
When a step or phase ends, any unused mana left in a player's mana pool empties. This turn-based action doesn't use the stack.
February 1, 2014 · Born of the Gods
When a step or phase ends, any unused mana left in a player’s mana pool empties. This turn-based action doesn’t use the stack.
September 30, 2011 · Innistrad
When a step or phase ends, any unused mana left in a player's mana pool empties. This turn-based action doesn't use the stack.
June 17, 2011 · Commander 2011
When a step or phase ends, any unused mana left in a player’s mana pool empties. This turnbased action doesn’t use the stack.
April 1, 2011 · Duel Decks: Knights vs. Dragons
When a step or phase ends, any unused mana left in a player's mana pool empties. This turn-based action doesn't use the stack.
February 4, 2011 · Mirrodin Besieged
When a step or phase ends, any unused mana left in a player’s mana pool empties. This turn-based action doesn’t use the stack.
October 1, 2010 · Scars of Mirrodin
When a step or phase ends, any unused mana left in a player’s mana pool empties. This turnbased action doesn’t use the stack.
February 1, 2010 · Worldwake
When a step or phase ends, any unused mana left in a player's mana pool empties. This turn-based action doesn't use the stack.