They are now a defining part of the Legacy and Vintage formats, in particular for their ability to be found by the various "fetchlands" (for example, Flooded Strand) released many years later
Given that rarity, the card didnt surface in public for more than 20 years after it was awarded to Yamaguchi - with even pictures unavailable online - until it surfaced in July 2023
While it's currently unknown just how much money unsuspecting traders may have been scammed out of, a prototype Pikachu card recently sold for $24,400
They usually resemble a tool that appeared in the previous game, Digimon World, and have a wide array of effects, like adding 300 attack points, recover 700 HP if own HP is lower than foe's, 1st attack, changing own property to Darkness and halving both self and foe's HP, countering foe's attack and halving self's HP, etc
Highly sought after for its distinctive style and historical significance, this card is certified PSA 10 Gem Mint, ensuring perfect condition