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For the mythics, its a touch more complicated

There are nine in total: Alolan Meowth Alolan Persian Sandile Krokorok Krookodile Nihilego Guzzlord ex Poipole Naganadel All the Steel Pokmon cards in Pokmon TCG Pocket Extradimensional Crisis These are all the Steel-type Pokmon cards in Extradimensional Crisis

Good news, because Kenrith, the Returned King is the MTG commander for you

If you already have access to an authentic copy in good condition, that's obviously the ideal point of comparison - this ensures you know exactly what a genuine copy of the card looks and feels like, making it much easier to spot if your new card has a subtly different type of material, or faults in the holographic foil