pokemon trading card game paldean fates elite trainer box A (now) $400 of Violet—Paldean Fates expansion! English】Pokémon TCG Scarlet & Violet

Things finally started to make sense to me

The only thing that you can safely trade for in bulk are commons/uncommons for decks (Yanma, Magnemite, Phanpy, etc), or average Trainer cards like Switch, Energy Retrieval, etc

They don't copy any information about the objects those cards were before they were put into your graveyard

Combined with Mind's Desire's ability to reduce the top card of a library to nothing, players have found ways to play a tremendous amount of cards in a single turn

Alternatively, players could be trying to find upgrades for the new Eldrazi Incursion EDH deck

But with this card, you gain life and mill each player