Rule evolution
Rule 903.4a
Earliest archived Rules release: 2009-10-01 · 2 wording revisions · 0 renumberings
Earliest archived Rules release903.4aDetails
Each deck must contain exactly 100 cards, including its general.
Wording changed903.4aDetails
EachColordeckidentitymustiscontainestablishedexactlybefore100thecards,gameincluding its generalbegins.Wording changed903.4aDetails
Color identity is established before the game begins. If a rule or effect refers to the color identity of an object in the game represented by a card, it uses the color identity established for that card as the game began.