Watchful Wood
The Shire's Reckoning #34 (x2/x1)
Location
4 (2)
Forest.  

Forced: After Watchful Wood is explored, add it to the first player's play area facedown. The next time an enemy attacks that player, deal this card to that enemy as an additional shadow card.

Shadow: Raise your threat by 1 for each shadow card dealt to the attacking enemy.