Even with a similar system, duplicates of rare cards may be a bit of a letdown unless players are using them in Pokemon TCG Pocket decks, but at least they could provide a bunch of pack points for players to use on other cards
A PSA 10 Charizard is worth 5-20x what an ungraded near-mint copy sells for, and buyers trust that valuation because the population data is public
Certain cards will also gain oil counters, though these seem to function as a set-specific resource similar to energy from Kaladesh whose use differs depending on whats on the table
Regular players have no chance to obtain these and if you are a fan of MTG you have to decide if you want to play the game or be a judge for others, as usually you cannot do both
Shelob, Dread Weaver Shelob, Dread Weaver not only counters graveyard strategies, but it also allows you to play some of your opponents creatures