History of CR 309.7

Every distinct wording since 2010, newest first.

July 23, 2021 · Adventures in the Forgotten Realms
A player completes a dungeon as that dungeon card is removed from the game.
May 3, 2019 · War of the Spark
Each plane card has a triggered ability that triggers “Whenever you roll {CHAOS}.” These are called “chaos abilities.” Each one is indicated by a {CHAOS} to its left, though the symbol itself has no special rules meaning.
January 25, 2019 · Ravnica Allegiance
Each plane card has a triggered ability that triggers "Whenever you roll {CHAOS}." These are called "chaos abilities." Each one is indicated by a {CHAOS} to its left, though the symbol itself has no special rules meaning.
July 17, 2015 · Magic Origins
Each plane card has a triggered ability that triggers “Whenever you roll {CHAOS}.” These are called “chaos abilities.” Each one is indicated by a {CHAOS} to its left, though the symbol itself has no special rules meaning.
May 1, 2014 · Journey into Nyx
Each plane card has a triggered ability that triggers “Whenever you roll {C}.” These are called “chaos abilities.” Each one is indicated by a {C} to its left, though the symbol itself has no special rules meaning.
September 30, 2011 · Innistrad
Each plane card has a triggered ability that triggers "Whenever you roll {C}." These are called "chaos abilities." Each one is indicated by a {C} to its left, though the symbol itself has no special rules meaning.
June 17, 2011 · Commander 2011
Each plane card has a triggered ability that triggers “Whenever you roll {C}.” These are called
April 1, 2011 · Duel Decks: Knights vs. Dragons
Each plane card has a triggered ability that triggers "Whenever you roll {C}." These are called "chaos abilities." Each one is indicated by a {C} to its left, though the symbol itself has no special rules meaning.
February 4, 2011 · Mirrodin Besieged
Each plane card has a triggered ability that triggers “Whenever you roll {C}.” These are called “chaos abilities.” Each one is indicated by a {C} to its left, though the symbol itself has no special rules meaning.
October 1, 2010 · Scars of Mirrodin
Each plane card has a triggered ability that triggers “Whenever you roll {C}.” These are called
February 1, 2010 · Worldwake
Each plane card has a triggered ability that triggers "Whenever you roll {C}." These are called "chaos abilities." Each one is indicated by a {C} to its left, though the symbol itself has no special rules meaning.