Talk:Gameplay/@comment-34399100-20180128202851/@comment-24699797-20180128224043

In official organized play sanctioned by Bushiroad, mixed language decks are not allowed.

For non-official tournaments, you should speak with your tournament organiser beforehand to determine whether or not they will allow mixed language decks.

In casual play, when agreeing to play a game with someone, inform them your deck is mixed language and check they're okay with it.