This may be an over-exaggeration, but I think the only "G" card that will become uber-popular and a staple in many decks will be Dialga G Lv.X, especially in decks that run Poke-Powers. He'll shut off Glaceon Lv.X, Ampharos (both SW and the to-be-released one which will be awesome), Abomasnow, Cherrim, Scizor, fossils (they have semi-interesting Poke-Bodies, right?), Houndoom (LA), Mewtwo Lv.X, Tyranitar SF, and Luxray (LA) to name a few. Not to mention the fact that the only bench protectors we will have (Bastiodon MT and Manectric GC) will also be shut off. Dusknoir and decks that rely on powers will get a mega boost from Dialga G Lv.X.