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In Commander, this card is absolutely fantastic

There are three different packs to choose from in the Genetic Apex expansion: Mewtwo, Charizard, and Pikachu

Speaking of playsets, there's also one of the green Exodus staple, Survival of the Fittest (all English, GD, LP, PL, PL)

Once Oblivious Bookworm's ability begins to resolve, it's too late to put any permanents onto the battlefield face down under your control or turn any permanents face up to prevent yourself from having to discard a card if you choose to draw a card

During you Standby Phase: You can return 1 of your banished "Element" card to your Deck, then your opponent can discard one random card in your hand