Same problem with Esika's Chariot and Goldspan Dragon (and Meathook Massacre too). I basically can't build new decks containing those cards, I'd have to craft them again and I don't want to waste my wildcards on cards I already have.

I also found several more cards with the same issue now. This could be a real problem for the game and I hope this can be solved quickly.

I cannot build any deck at all, I have the cards for the decks, but every time it says "Wildcards needed to complete: x" - but I still have those cards and couldn't craft them with Wildcards if I wanted to, because I still own them.
So what's the point in playing, if you cannot build decks anymore? I don't get it, why I'm not allowed to do this anymore :-(

I am literally getting the exact same issue with MULTIPLE cards and, until resolved, I refuse to play this game. May even end up looking into how I can get money back since I can't even use cards I own.

I have 4 druid class cards in my collection and I can use all of them normally, so this bug must affect people differently.

As you can see in my pics, the game shows me I have two meathooks in my collection, only allows me to use one in the decks that I had previously built, but doesn't allow me to use any meathook in a new deck. So basically I can only use the card in the decks that already contain it, and only one of them, and that's it.

Game shows 4 druid class in collection but tells me deck is invalid unless I only use 3 druid class