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It helps preserve collectible colors and sealed box condition

This One Piece booster box protector is designed to hold sealed products with a stable fit

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Lastly, there are cards specifically built around this mechanic, like Thieving Varmint or Gonti, Canny Acquisitor, that easily let you cast spells you dont own

And Reckless Wurm was a great attempt to bring back and duplicate that success as well

Its unclear as to whether he was the first to produce such a mash-up