I'm considering returning to the game after about a 1.5 year break. I've been looking at some of the decks popular now, but I don't really have any cards XY-on. Can someone give me a recommendation or list of the staples I should have for most decks in the format? (this will probably be XY-on, as there is only worlds left in this format) Also, could someone give me a quick list of the decks that will be decent in XY-on so I could look into getting at least some cards for those decks? I'm trying to see how expensive it will be to return. Thanks so much!