Can a player use cards entirely in a foreign language (e.g., Chinese cards in Europe) at Riftbound tournaments, and can tournament organizers prevent certain languages from being played?

Ruling: Official printed cards from any language are legal for Riftbound organized play, but all cards in your deck must be of the same language to prevent identifying specific cards by feel. Based on this rule, a European player can play a deck entirely in Chinese in Europe.

Nuances:

• Players are advised to have an easy way ready to provide card translations to opponents
• The quoted language rule appears in official game communication but is not yet included in the Tournament Rules document itself
• Whether tournament organizers can prevent specific languages from being played remains unanswered in this thread