『テンペスト』のカード

《二枚舌》

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Enchantment

When Duplicity comes into play, put the top five cards of your library face down on Duplicity.
During your upkeep, you may exchange all the cards in your hand for the cards on Duplicity.
At the end of your turn, choose and discard a card.
If you lose control of Duplicity, put all cards on it into owner's graveyard.