The owner of this deck hasn't added a sideboard, they probably should...
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Ryhstic cards that depended on your opponents not having any mana to stop you.
Search your library until you find Web of war, which will probably tap out your opponents during your turn so they won't be able to tap even 1 mana and therefore you can use spells like Rhystic Lightning/Rhystic Study/Withdraw for their full potential, and they won't have mana during their combat phase so propaganda stops them from attacking almost completely.
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