What if all players choose to draw three cards in a seven hand, one deck game? There won't be enough cars will there?
Once the deck has run out, the cards already discarded are shuffled to make a new deck from which replacement cards can continue to be dealt to players. (https://www.pagat.com/poker/variants/5draw.html#:~:text=If%20the%20deck%20runs%20out,the%20player%20to%20dealer's%20left.)
