mtg blank proxy cards Create Stunning Proxies with Mythic Black Core World Championship Decks Rarity Proxy Card (Old Border)

While there is some variance (super-low-curve aggressive decks might have slightly less, while decks built on ramping or other land synergies might have slightly more), probably 80% of all the Commander decks I build have 37 lands

If you don't control three permanents you don't own as your end step begins, Agent of Treachery's last ability doesn't trigger

To dive into this mechanic in more depth, it's (like most mechanics) a version of Kicker

While its no One-of-One Ring, there are only 77 serialized copies of this card in existence, making it obscenely rare

Then, it has abilities that do damage only to already-damaged opposing characters

I don't see a shell for this