Card duplication exploit
Description: If you have at least one copy of a card, you can put multiple copies of it in the deck builder.
Steps to reproduce: Add the only copy of a card you own, then search the card and click it to add a second copy. You now have two copies of the card in your deck despite only owning one. This works in reverse as well, adding a copy from searching first and then clearing the search to add another dupe copy. Potentially works past 1 copy if you keep alternating but I have not tested that. duping a card this deck that is missing a card and normally unable to queue into a game but we can enter by duping a card to fill out the deck