I'm surprised there isn't a review on this card yet. It's only downside being that there aren't any Noldor Heroes in the tactics sphere other than Elladan, Revealed in Wrath is great across a variety of quests. I have used it to get rid of some archery damage for a round, negate engagement effects, etc. "Southron Archer" and "Uruk of Mordor" from the recent Sands box have been some great targets as are many of the differing versions of Nazgul you can encounter in other sets. I think it's also perfectly costed at 1 as well.
As enemies continue to have nasty text boxes and with the hope that we will one day see more Noldor Tactics support, this card will only get better. Unless they start getting trigger happy with the "immune to player card effects" clause or load up encounter decks with unique enemies, this card will always be worth consideration.