Poison-darts
The Drúadan Forest Nightmare#9 (x3)
Treachery
Item.  

Surge.

When Revealed: Attach to the enemy in play with the highest engagement cost. (Counts as a Weapon attachment with the text: "Attached enemy gets +2 and gains Archery 2.")

Merry did not like this talk of wild men and poisoned darts... -The Return of the King