pokemon pikachu movie card 1999 Japanese Bandai Carddass Vending Series 7 #MOVIE 50 & Psyduck Carddass Vending Ser.7 PSA 9 [L] Recharge Pokémon x Mario promo cards

Its a little steep at 6 mana for 1v1 formats, but some control players manage it if they combine it with Riverchurn Monument

I could see many decks using this even if the proliferation is incremental

Mewtwo (PROMO-A) is not available in Rare Packs

Take a look: Just looking at the older cards, I can see the difference in the border size when compared to newer ones

This makes Shadowborn pretty niche, you want to be playing it in some dredge style deck or one with loads of recursive stuff like Bloodghast

You can go through them, one by one, or count up a stack of a hundred or so and replicate that with other stacks until you get a rough guess