Shadowy Vale
The Crossings of Poros#154 (x2/x1)
Location
2 (5)
Hills.  
While any player has threat of 35 or higher, Shadowy Vale gets +3 .

Forced: After Shadowy Vale becomes the active location, reveal the top card of the encounter deck.

...nothing could waft away the glooms and the sad mists that clung about the Mountains of Shadow...
-The Return of the King