If the opponent has no monsters on his or her field at the beginning of your Battle Phase, and has not had a monster on their field at any point during that turn, your monsters can attack that player directly during that turn
Welcome Decks are not Standard-legal
Gimli of the Glittering Caves will naturally grow over the course of the game, and double strike allows it to make up to two Treasure tokens when dealing damage to a player
Make sure your device is compatible with the Action Replay codes
as this card is already one that seems to be in plenty of decks at present, youll either want to get hold of multiple copies yourself, or find a way to counter it, and quickly
There are some others cards for which the text box isn't white, but what's in the text box is more of a background pattern rather than part of the Pokemon, for example this version of Keldeo EX from Boundaries Crossed: Given that's there's a full art version of the card in the expansion (#142), I guess it's safe to say that this card is NOT full art