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Card Details
If an opponent searched their library this turn, you may pay 
rather than pay this spell's mana cost.
Target opponent mills thirteen cards.
Illustrated by Jason Felix
Rulings (8)
Oct 1, 2009
A spell or ability causes a player to search their library only if it specifically contains the word "search" in its text. For example, if a spell or ability lets a player look at the top four cards of their library and do something with one of those cards, that's not a search.
Oct 1, 2009
Archive Trap checks only whether an opponent searched their library. It doesn't matter whether that player found a card during the search.
Oct 1, 2009
Casting a Trap by paying its alternative cost doesn't change its mana cost or mana value. The only difference is the cost you actually pay.
Oct 1, 2009
Effects that increase or reduce the cost to cast a Trap will apply to whichever cost you chose to pay.
Oct 1, 2009
If a search effect is affected by Aven Mindcensor's ability (which causes a player to search the top four cards of their library instead), that still counts as searching that library.
Oct 1, 2009
If the targeted opponent has fewer than thirteen cards in their library, that player puts their entire library into their graveyard.
Oct 1, 2009
The opponent you target doesn't have to be the opponent who searched their library.
Oct 1, 2009
You may ignore a Trap's alternative cost condition and simply cast it for its normal mana cost. This is true even if its alternative cost condition has been met.
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