Cards printed in a foreign language are tournament legal, but you should have a localized copy of the card on hand for reference.
The game has been released it in the following languages:
- German (Heidelberger Spieleverlag)
- Polish (Galakta)
- French (Edge Entertainment)
- Spanish (Edge Entertainment)
- English (Us -FFG)
- Chinese (Game Harbor)
- Italian (Giochi Uniti)
None of the others are made by FFG. Does that mean not usable for tournaments?