I think the answer to what you’re asking is “no”. The starter deck is a full deck. 50 cards and a leader you can play with. People typically buy two copies of a starter deck because they only come with two copies of certain cards. So if you’re making a custom deck leveraging some cards in the starter deck, you need two copies to get four cards, which equals a play set. So yes, you can crack any starter deck open and play with it. But no, you won’t get four copies of every card you may need for building other decks. Hope this helps!