Keys of Orthanc
The Voice of Isengard #10 (x3)
Attachement
[1]
Objet.  

Attach to a hero.

Response: After you raise your threat from the Doomed keyword, exhaust Keys of Orthanc to add 1 resource to attached hero's resource pool.

"He has the Key of Orthanc" –Gandalf, The Two Towers