The Door is Closed!
The Treachery of Rhudaur #92 (x3)

Response: After an encounter card is revealed from the encounter deck, cancel its effects and discard it if there is a card with the same title in the victory display.

"...I perceive the Dark Lord and know his mind, or all of his mind that concerns the Elves. And he gropes ever to see me and my thought. But still the door is closed!"
–Galadriel, The Fellowship of the Ring