jaula420: So im bit confused about this quest as it still appears "open" in my quest log. I read from internet that it will go under "failed" if you fail to get some specific cards. I have now finished main story and I lost to my second opponent in quest high stakes so im wondering is there some other way to get those cards from that tournament as my "collect em all" quest is still open?
I should propably add that the book "a miraclous guide to qwent" states that I have 3 cards missing from novigrad and 1 from players with no particular renown or skill.

olnorton: There is no way to get those 3 cards unless you win the tournament.
You can add them with the console
additem('gwint_card_francesca_gold')
additem('gwint_card_eredin_gold')
additem('gwint_card_emhyr_gold')

And then just find a merchant you haven't played yet, to get the last card and close the quest.