sideboard
... that a sideboard or side deck is used in some collectible card games to modify playing decks?
... that a <b id="mwAYc"><a href="./Sideboard_(cards)" id="mwAYg" rel="mw:WikiLink" title="Sideboard (cards)">sideboard</a></b> or side deck is used in some <a href="./Collectible_card_game" id="mwAYk" rel="mw:WikiLink" title="Collectible card game">collectible card games</a> to modify playing decks?