These are mostly Commons and Uncommons (i.e., cards with a black or silver edition symbol)
Mew is a mythical Pokmon and one of the most recognizable Pokmon in the entire franchise
But as a card most at home in the sideboard, Negates mana efficiency is perfect for combo or control match-ups when you need additional stack interaction, and when noncreature spells are exactly what you want to answer
You only have to look at the fact that we got a reprint of Heroes Downfall, one of the best pieces of removal in Standard history, but downshifted from rare to uncommon, to see how much Magic has changed
For collectors who want to enjoy Japanese aesthetics without language barriers, some players explore digital formats and guides like how to get Japanese cards in Pokemon TCG pocket to enhance their experience
On the supply side, a lot depends on reprints, distribution and production cycles