Lets consider, though, a couple of examples to highlight the moments when running a card like Pokmon Reversal/Catcher is worth it
It has the Crushing Beat attack, which not only does 190 damage but also allows you to discard a Stadium in play
Regenerating a creature can be gamesaving against removal, and preventing combat damage is excellent when you're facing aggressive strategies
You can't wait and cast it later
Adjacent colors (like green and white) tend to have a lot in common, but their other allies are enemies (green is allied with red, which is enemies with whites ally, blue)
#9 -- Charizard VMAX (Secret Rare, Champion's Path) Champion's Path was a set built almost entirely around a single card, and that card was the Charizard VMAX Secret Rare that defined the collecting landscape of late 2020 and early 2021