In formats where consistency is king then you can do a lot better than this
Or maybe the issue was that even with two colors there werent enough incentives
But that is how the idea came about and those were the first and probably only decks made for the mini cards
There may be more valuable or rarer cards that you can find in niche parts of the Pokemon TCG, but no card will ever be able to compete with the fame of the first edition Base Set Charizard
I run this in my self-bounce Bant iconic Equinaut brew where you cast a flashing self-bouncer like Whitemane Lion or Fleetfoot Panther, trigger the cast trigger of Equilibrium and spend a mana, trigger Aura Shards or other ETB to Disenchant, a self-bounce like Azorius Aethermage to draw a card, and then a tapper like this to tap-lock something your foe controls
In turn, many of the more expensive cards are often older, as it's increasingly difficult to find high grade vintage cards