The power of this deck depends on an effect I'm actually not sure about: Galadriel's ability to allow allies just played not to have to exhaust to commit to the quest. If this applies to Ents, then it means they can quest on the first turn they are played even though they are already exhausted. Which would be incredibly nice.
Aside from that, obviously you will want to get Nenya out ASAP so Galadriel will get the icon, using a mulligan, Mirror of Galadriel, Heed the Dream, and Daeron's Runes, Gather Information and Galadriel's ability herself to get it as first priority. Otherwise you will have a very hard time with resource matching.
I haven't played this one yet; any suggestions would be welcome.