Guide Book Gold Bottle Cap .

Hello. I would like to know something. If i inject this wonder card on my Pokemon Sun (USA REGION) in spanish language, would it be illegal or how can i say that, banneable? what do you recommend me? Do you recommend me to use the TCG Bottle Cap in Spanish version or what? Thanks in advance.

Yup, I don't recommend injecting this for US console, as this serial code event is region locked to JP 3DS.

Also, this event does not have an international counterpart.

You could just have another Pokemon in a non-game sync game hold the bottle cap, then trade it over to your main game.