Pikachu Illustrator Card 2
It can remove a smaller creature as soon as it enters the battlefield or immediately shut down a powerful blocker
The only artificial rarity differences I think are likely are for the non-holo rares, where I would guess Hydreigon and Kommo-o, those ones featured as theme deck exclusive holos, are prnted 4 times each on the sheet, the other ones 6 or 7 times
They're not too expensive, and they're a very effective way to learn how to play
Pippin, Guard of the Citadel By now we all know just how powerful Skrelv, Defector Mite is, and I think Pippin, Guard of the Citadel is arguably better
And that's exactly what Nykthos does in decks that are strictly dedicated to devoted to a single color