>>54167777When it has a dedicated rule on the card. Like greninja saying only have 1 radiant in a deck, or ex / v's giving 2 prize cards.
They used to print cards that specifically mentioned just GX EX etc but those eventually become obsolete when they add new gimmicks like V's, radiant, prism stars and ex. Plus listing them all out takes a lot of space on the card. So in recent years they've just classified it all under "rule box"
