How do you exchange duplicate cards you have collected to a wild card?

Thanks

The answer did NOT answer the question. The question was WHERE DO I DIND THE TOKENS? I CAN'T FIND THEM ANYWHERE. SO THE ANSWER NEEDS TO BE: YOU FIND THE TOKENS BY LOOKING AT....(wherever the damn tokens are. The question was not how many tokens do i need ti convert to a wild card. WHERE are the tokens. Jeeze.

I don't know if you still need the answer, but I ended up here by looking for it so if anyone else looks for the answer here it is: on top of the Collections screen you have a progress bar and a number of how many tokens you have out of how many you need (200) to get a wild card

P.S. You don't exchange them, they automatically get exchanged and you get to "clame the reward" (the wild card) when you reach 200

Thanks

In the card collections there is a progress bar showing crowns to cards. These will automatically convert to wild cards once you reach 200 crown tokens.