Whenever you attack with any creature, youll suspend a nonland card from the top of your deck with three time counters

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Superior Energy Retrieval, which states that this card only works if the player discards two other cards from their hand, allows the player to put up to 4 Basic Energy cards into their hand from their discard pile
You can run this deck without a1a-32-mew-ex and replace it with another a1-154-hitmonlee, and it would work just as fine, if not better