If you dont need to stop a Swords to Plowshares thats targeting your commander, maybe that Negate can snag a Bolass Citadel or Teferis Protection instead
In a format where powerful enchantments define the meta, having a 6/5 body that acts as a main-deck answer is invaluable
Most famous is (Bayer & Diaconis 1992), co-authored with mathematician Dave Bayer, which analyzed the GilbertShannonReeds model of random riffle shuffling and concluded that the deck did not start to become random until five good riffle shuffles, and was truly random after seven, in the precise sense of variation distance described in Markov chain mixing time
Beyond its functional representation, the Master's Key becomes an emblem of triumph, awarded to skilled trainers who conquered the World Championship Tournament
Fortunately, the reward of giving your whole team +3/+0 or drawing three cards when you connect in combat is huge