On the one hand, this is less powerful and generally applicable than just straight up canceling a shadow effect. So cards like Hasty Stroke or A Burning Brand or responses like those of Erkenbrand or Déorwine are generally better. Those others can deal with shadows that do things like give extra attacks, deal direct damage to the defender or raise threat.

However, there are two clear advantages to this card. First, the zero cost. The worst thing about Hasty Stroke is having to save back a resource just in case it is needed instead of spending that resource on an ally who will definitely help that round. So if you are on a quest where the shadow effects that concern you are attack boosts, this might be better. Second, it targets the defending character, not the shadow card. So this will still work, for example, when it is Night on the Wastes of Eriador and encounter cards can't be canceled or when facing an enemy whose shadow cards are immune to player card effects.

What to make of the 2 tactics resource kicker? THE card of this type where the kicker consistently makes sense is Heed the Dream. For this card, it would have to be a very specific circumstance -- maybe a Mablung deck that has a surplus of tactics resources would want to trigger it, but not much else.

TL/DR: A quest specific alternative to general shadow cancelation that can be cheaper and more useful in some circumstances.

I do have a question about this card, I wonder if this card is used to transfer one ally from one player to another would that count as leaving and then re entering play? if so it would set up a deadly dual hand or or multiplayer technique with Meneldor, Descendent of Thorondor and other enter/leave play effect combo cards, Either way at 1 cost the noble trait is good to have, along with the ability to assign eagles where they are needed most is very thematic.

This card might be garbage, but it's at least special garbage. This garbage card is the only event in the game that can get a card into your hand without "draw" or "search" as part of the text, which can potentially be relevant when facing certain encounter/quest effects. Granted, King Under the Mountain, Messenger Raven, and Gildor Inglorion can also do this and are almost certainly better than Gandalf's Search in nearly every situation I can think of, but those aren't event cards.

Can anybody tell me what's the different between "cancel 1 point of damage" and "reduce 1 point of damage”？for example , if one of my hero take 2 combat damage, can I use his ability to reduce the damage to 1?

Not too much to say about this card. It's pretty self-explanatory. It is obviously meant to complete the victory display cards. We've had Leave No Trace for adding locations to the victory display after being explored. We've had None Return for adding enemies to the victory display after being destroyed. The trio is now complete with Weep No More! to add treacheries to the victory display after being resolved.