Eaves of Mirkwood
The Siege of Erebor #22 (x2)
Location
4 (2)
Forest.  

Travel: Choose a main quest and deal 1 damage to it.

Forced: After Eaves of Mirkwood leaves play from the staging area, deal 2 damage among main quests in play.

…they could see the forest coming as it were to meet them, or waiting for them like a black and frowning wall…
—The Hobbit