The man speaks the truth.
It can make the difference between a strength 7 Aragorn and a strength 10 Aragorn.
Maybe removing a
Castamir and maybe a lesser minion to add a couple of
Raider Halberd 7C146. This weapon goes perfect with the
Castamir of Umbar. If for whatever reason you don't have enough twilight to play another minion and take advantage of
Castamir's special ability, you can play the Halberd on him and exert him during the skirmish phase to get his strength up to 22 and add 6 twilight tokens. It may not go along with your deck strategy, but if you get in a pinch it could be useful. I've wiped out entire fellowships with that combination of cards.