It's A Bit Of A Puzzle Given how uncommon it is for Charizard to be knocked off its number one pedestal, it's no doubt surprising that Greninja ex was the card to do so
(A copy of a creature spell becomes a token.)
We certainly dont need to spend thousands to get there, though
After all, nothing would be more fun than going through the ordeal of setting up Barren Glorys win condition, only to wheel out The Cheese Stands Alone instead
When each card can win the game, youre nearly always ahead of the curve
The main tradeoff is workflow: Proxy King isnt built around paste a list print 100 cards. Its closer to buying proxies like singles (or bundles), which is great for grabbing 220 key pieces fast, but less ideal when youre trying to proxy an entire Commander deck in one smooth import