There's no single answer, but here's how I'd think about it: If you just want to build and share decks , use Moxfield
If you're putting one onto the battlefield without playing to cast it, you get the front face, but only if the front face can actually enter the battlefield

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Not only that, chewing on the card for a few days while a few more cards from Commander 2019 were revealed at GenCon gave me a few ideas for the card in question that may seem a bit unorthodox at first
Psychic Pokmon Are Strong Against Fighting-Type Pokmon Whenever faced with a fighting-heavy set of Pokmon in battle, players can count on the Mewtwo ex deck to serve them well