I somehow misplaced the Captain America obligation card. Is there anyway to replace this card without having to repurchase the entire deck?

Hall of Heroes has the inserts

https://hallofheroeslcg.com/captain-america/

if you decide to get the Captain America deck let me know I will offset some of the cost if you are willing to part with Falcon, Mockingbird, Wonder Man, Avengers Tower, and Squirrel Girl.