mtg all will be one card Phyrexia: Whenever you put one or more counters on a permanent or player Conduit of Worlds · Phyrexia:

Similar in feel to Steel Overseer, but worse in pretty much every way

One could even argue that formats like Brother's Highlander and other "point-based" systems does a good job in creating a sense of "you don't have every card"

plus six cards from the Enchanting Tales bonus sheet will be banned in Historic

Mix this card with a bunch of counters and control decks and you can frustrate your opponent by stopping everything that they do and just stacking health until your finally have enough to give you the instant win.

Unless youre talking about something truly rare or hard to obtain, theres not much incentive to try and grade your cards before selling them