as a browser player (my personal reason is parental controls) I have to keep a tab open to save progress. This isn't super feasible because or my browser can crash or I can have a system update. Ive seen that the card game GET YOKED have a somewhat unassuming botton in its settings menu that unlocks all decks. This isn't a foolproof proposal because GET YOKED has 5 decks and the game doesn't indulge grinding.
also (I don't mean to nudge you on this) Ive played the masters deck definitely enjoyed how the deck building deck could be so rewarding (and potentially painful)