Nice job! I appreciated the environment, masks, and card art.
I have to confess that it took me a while to finally understand how to throw the card, but I finally got the hang of it after taking off the headset, watching your playthrough video and then rereading the instructions on the description page for using the trigger to unpin before being able to throw. I was more concerned with understanding the rules of the card game itself.
I appreciate that it's a game jam and everyone has limited amount of time/energy to make a game. I might suggest a quick thing to add for post-jam would be to have the voice in the game say "Press the trigger to unpin the card first in order to throw it".
Alternatively, I think it would have been even easier to understand by replacing the pinning mechanic entirely (I know you worked hard on it though) and have it auto-sort/arrange the cards linearly in your hand (like it does with the other players). As long as you return the card to a delimited area near your hand, it will put it back in your hand, while dropping it outside that area would throw it. This also solves the problem of having all the new cards spawn in the the same place in your hand and overlapping on top of each other, which confused me at first.
I did finally win a round and received an etch-a-sketch!