Navigator's Ruin

Enchantment    (CMC:3)

Raid — At the beginning of your end step, if you attacked with a creature this turn, target opponent puts the top four cards of his or her library into his or her graveyard.

"You won't be needing this. Or this. Or these . . ."

063 XLN • ENZoltan Boros

™ & © 1993— Wizards of the Coast

Notes: TODO: Update Copyright

Legal in: Pioneer,Modern,Legacy,Vintage,Commander

Oracle Text (click to copy):

Navigator's Ruin {2}{U} Enchantment Raid — At the beginning of your end step, if you attacked with a creature this turn, target opponent puts the top four cards of his or her library into his or her graveyard.

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View this MTG card on Gatherer

9/29/2017
Raid abilities care only that you attacked with a creature. It doesn’t matter how many creatures you attacked with, or which opponent or planeswalker controlled by an opponent those creatures attacked.
9/29/2017
Raid abilities evaluate the entire turn to see if you attacked with a creature. That creature doesn’t have to still be on the battlefield. Similarly, the player or planeswalker it attacked doesn’t have to still be in the game or on the battlefield, respectively.
9/29/2017
Some raid abilities trigger at the beginning of your end step. These abilities trigger if you attacked with a creature that turn, even if the card with that raid ability wasn’t on the battlefield when you attacked.

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