Long Trailer
The Old Forest#8 (x4/x2)
Enemy
(40) 2 4 2 6
Tree.  
While Long Trailer is in the staging area it gains: "Forced: After the active location leaves play as an explored location, Long Trailer makes an immediate attack against the first player."

"Occasionally the most unfriendly ones may drop a branch, or stick a root out, or grasp at you with a long trailer." -Merry, The Fellowship of the Ring