The choice of targets, payment of the cost and other steps of the spellcasting are followed in a usual order
While there are two Mega Charizard ex cards in Wild Blaze [XY2], by far the biggest get of not only the set but of all Mega-Evolved Pokmon cards is the Dragon-type Mega Charizard X
You just need to attack with one creature to get the Quest Counters rolling
If the market did become flooded with fakes, the only reasonable response would be what I outlined in World War M: moving toward a date in the future when the only cards that could be played in tournaments have the new copy-proof card face
Overall, for the best protection, choose a binder with a secure closure system (ideally a zipper) so your Pokmon cards stay put and clean when the binder is not in use
If there are only two players in the game, you won't choose a third player, and no one will create Treasure tokens