What do I need to do to use Japanese Pokemon cards at Pokemon Sanctioned Events?
You need either:
1.
An English language reference card outside the deck (e.g. 4 JPN Darkrai in the deck, 1 English Darkrai outside the deck, to be revealed when the first JPN Darkrai is revealed or played).
2.
Unaltered printout of the appropriate pages from the official Card-DEX.
The following will NOT work: card scan printouts, printouts from the "Find a Card" and "Card Info" sections of the www.go-pokemon.com site.