Effect | - ■ Revolution 0 Trigger—Whenever a creature attacks you, if you have no shields, you may cast this spell for no cost.
■ Reveal the top card of your deck and put it on the bottom of your deck. If it was a Light creature, put the top card of your deck into your shields face down.
■ After you cast this spell, shuffle it into your deck instead of your graveyard.
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