While at first glance, Black and White may appear to be two of the most polar opposite colors in all of Magic: The Gathering, when working in conjunction, the colors bring a lot of power to the table
You can also use this card to pay for any effect that would make you discard it or sacrifice it, returning it back to your hand when you get the chance
MTG Arenas sideboard works a bit differently than in paper
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Attune basically stockpiles energy for a bonus effect later in the game at no additional cost
