Historical Rules · 5 October 2018
Rule 100.4
Official source text from the 5 October 2018 Rules release
Each player may also have a sideboard, which is a group of additional cards the player may use to modify their deck between games of a match.
Historical Rules · 5 October 2018
Official source text from the 5 October 2018 Rules release
Each player may also have a sideboard, which is a group of additional cards the player may use to modify their deck between games of a match.