Packaging The packaging your cards came in can also be a big indicator that your cards are genuine or fake
The opposite example would be decks with low mana curves, or with single cards capable of having an abnormally high impact on the game
Raffine, Scheming Seer The demons that are aligned with the crime families from Streets of New Capenna are each so good
Condition is a huge factor for this card, as most MP or worse copies will max out at $250, while near-mint copies can command anywhere between $350 to $500, depending on how good the condition is, as a highly-graded copy sells for more than $500
Food Chain is the most common partner in crime for Prossh, generating infinite mana (for creature spells), tokens, and death triggers simultaneously from there its just a matter of choosing how you want to end the game
Playability elsewhere, iconic status, or unban potential can maintain value