This was one of the cards that let us win finally againts Mount Doom, having 9/12 heroes with the Noble trait. It's quite costly, but also in the sphere with the highest resource generation, so it should not be too hard to put in use.
Captains of the West
Event. Cost: 3.
Quest Action: Until the end of the phase, each Noble hero gets +1 and does not exhaust to commit to the quest.
"...there are names among us that are worth more than a thousand mail-clad knights apiece." Gandalf, The Return of the King
The Mountain of Fire #9. Leadership.