
Whenever Ayesha Tanaka attacks, look at the top four cards of your library. You may put any number of artifact cards 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 Ayesha Tanaka's power from among them onto the battlefield tapped. Put the rest on the bottom of your library in a random order.
Ayesha Tanaka can't be blocked as long as defending player controls three or more artifacts.
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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.