You need to get more from your cards, and your creatures in particular, than you can get if you have no way to interact with your graveyard
Let's say there were 10 copies of Greed listed for sale on TCGplayer at between $40 and $60 (made up numbers, but having 10 or fewer near mint copies for sale isn't uncommon for very old cards)
While the original Base Set printing can be had for a relative pittance (sub-$2 per PriceCharting), the fireworks reverse holo version is worth over $200
Pokmon Card Sword & Shield Promo Cards/SWSH: Sword & Shield Promo Cards VaporeonVMAX / Vaporeon VMAX SWSH182 This is the Portuguese version of the regular size card, not the jumbo size
Norman Osborn / Green Goblin By itself, Norman Osborn is a 1/1 unblockable creature that connives, which means it gets stronger as time goes by, while discarding key cards to use later