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Control Magic Control Magic does what it says on the tin

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You must then build a 100 card deck (including the Commander), but with a couple caveats: You may have no more than 1 copy of a given card in your deck (excluding basic lands) All cards in your deck must only contain mana symbols and colors matching your commanders color identity The Commander rules committee already has a rules document that clarifies all the specifics for how to play, so I wont bore you with any further rehashing here