
WardWardWhen this becomes the target of a spell or ability an opponent controls, counter it unless that player pays the ward cost.
Whenever you attack, look at the top six cards of your library. You may cast a spell from among them with mana valuemana valueThe total amount of mana in a card's cost, ignoring colour. A card costing has mana value 4. X counts as 0 except on the stack. less than or equal to the greatest power among attacking creatures you control without paying its mana cost. Put the rest on the bottom of your library in a random order.
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Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.