It's like what SweetSam said and marcel tried to explain ... the cards are already pre-determined before you even pick one. It has nothing to do with probability. It has everything to do with what the devs have programmed into the game as far as when you get a card. It doesn't matter which one you pick. If it's not your turn to get a card, you're not going to get it unless you're willing to spend the gems to flip enough cards to get what you want when it shows up. When the game has determined that it's your time to get a card, then it will be there. Until then, keep saving up those spirit tokens because those are your guarantee of when you'll get the card you want.
