A regular-sized card didn't boast enough space for this gargantuan creature to fit
If you look at where a booster pack is sealed (the serrated top and bottom edges), you'll see a distinctive pattern
The Logan Paul Pikachu Illustrator Pokmon card sold for such a high price that it even earned a Guinness World Record

This Pokmon TCG: Pokmon GO Pokmon Center Elite Trainer Box Plus can be found only at Pokmon Center and comes with exclusive accessoriesa deck box, metal dice, metal coin, and metal condition markersplus 12 booster packs (two more than in a standard Pokmon GO Elite Trainer Box): 12 Pokmon TCG: Pokmon GO booster packs 1 full-art foil promo card featuring Mewtwo V 65 card sleeves featuring Mewtwo 1 deck box featuring Mewtwo 45 Pokmon TCG Energy cards A players guide to the Pokmon GO expansion A Pokmon TCG rulebook 6 metal damage-counter dice 1 metal coin 2 metal condition markers 1 acrylic VSTAR marker A collectors box to hold everything, with 4 dividers to keep it organized A code card for Pokmon Trading Card Game Live Pokmon GO Mewtwo V Battle Deck and Melmetal V Battle Deck Launch: July 01, 2022 Unleash mental might or metal mayhem with a deck led by Mewtwo V or Melmetal V with Pokmon TCG: Pokmon GO V Battle Decks

The former will only be awarded once and includes various items (Hourglasses, Shop Tickets, Shinedust), while the latter requires the player to complete a specific objective in a battle to earn further resources