That's just speculation, but it's just a cool item from Magic history that not a lot of people have or can get their hands on. The lots also include an empty box for second MTG expansion Antiquities, released in 1994, bundled with original wrappers for some of the boxs boosters
Want to pull this card yourself
Cards Against Humanity Pays You $5 Sale
Filled with courage and determination, Mega Greninja ex gathers other powerful Mega Evolution Pokmon ex, including Mega Pyroar ex and Mega Dragalge ex, to ward off this growing threat." In the box, you'll find nine Chaos Rising booster packs, a full-art foil promo card, 40 energy cards, and 65 exclusive Greninja card sleeves, along with your standard competitive TCG dice and fare
Yes, the activation cost is steeper than that of most creature-lands, but its a worthy price for the chance to bash for 20, 30, or even larger chunks of life