If youre not careful, youll quickly run out of cards
This is where Id normally tell you to check out Amazon, eBay, TCGplayer, etc
Sometimes accidents happen, when one of my family members forgot to tel me a card was sold or i perhaps, thought i still had a card and found to my surprize it was already sold before
Whether your goal is to turn a profit selling your cards or just make your expensive hobby pay for itself (we get it), you have two great options for selling your old cards online: you can list them on TCGPlayer or list them on eBay
Deadeye Navigator and Displacer Kitten are among the best versions of this since you can trigger them multiple times a turn, but the reliability of cards like Soulherder and Teleportation Circle help extract value from the long game
This can be absolutely back-breaking for certain decks