base set pokemon card 1999 Shadowless Disco Holo Square Cut Test Print Set Colorless Artist Original 151 Complete Set (151/150)

One was a key card in a specific archetype in limited and was reprinted later during the same year for a similar archetype in M21 (2020), while the other became a sort of meme card you could often pick up for gems late in the draft on Arena

The real reason collectors are eyeing it, however, is the artwork

As you can see, this gives the equipped dork lifelink

Buying a box of the set isn't much cheaper then buying the complete edition either, with that recently going for over $400,000 at auction

By introducing new mechanics and new creatures in their games, Nintendo has been able to keep fans not only interested but ecstatic at the thought of a new entry to their beloved series