We're often asked this! Really, the deck is about the journey rather than the destination, but once you have collected all of the cards in the deck, as well as the satisfaction of completing it, you can choose to now play with those golden cards during any of the games!
You can choose the golden card faces, the golden card backs, or of course both if you wish! We think they go best on the green baize background, but that's just us!
They won't make a difference to the game, other than the nice feeling of having completing something and earned the reward!
We are considering adding more features to the game for those experts who have completed the golden deck - perhaps you might let us know any suggestions you have for these, or maybe even new achievements which may be worked towards!