I underestimated valiant sacrifice originally, but it's actually pretty good. It's fairly cheap, and allies leave play fairly often. Campfire Tales, Erestor, and We are not Idle are the only other leadership card draw sources that aren't trait specific and valiant sacrifice holds it's own.
Valiant Sacrifice
Event.
Cost: 1.
Response: After an ally card leaves play, that card's controller draws 2 cards.
"He fell defending the Hobbits, while I was away upon the hill.
Aragorn, The Two Towers
Aragorn, The Two Towers
David A. Nash
Core Set #24. Leadership.

Reviews
This is great addition to all those decks using mechanic where all the cards leaves and enters play. With Prince Imrahil and eagle deck I use it all the time. The artwork could be more dynamic and detailed, but its still good. Verdict: 4/5.