This is a fun Erestor deck that works well solo or multiplayer. There's nothing that clever here, it combines power from Outlands, Ents, and Noldor with overwhelming card draw. This deck is good at questing and great at blocking, thanks to Protector of Lórien, A Burning Brand and Cloak of Lórien. It can struggle with attacking until it finds Ents or some of the stronger Noldor, but that generally doesn't take more than a couple of turns.
Playing the deck is pretty fun. Opening hand, the best card is To the Sea, to the Sea!, which usually will allow you to play someone ridiculous. Usually you don't get that lucky, but Elven Jeweler, Guardian of Rivendell, or any of the 1-cost allies are also solid. Strategically, your goal is to play or discard everything every turn before Erestor makes you dump them. If you're using Silver Harp to hold cards from turn to turn, you're probably doing it wrong. The harp is amazing but you should think of it as an extra card draw, not as a way of holding on to stuff. You're going to discard a lot of good cards, but that's the fun of the deck! Roll with it!
A few cards are here primarily for flavor. Even in this deck, Imladris Caregiver just isn't as good as Warden of Healing, but I'm sick and tired of the warden so here we are. Lords of the Eldar and Elven-light don't actually do much in this deck. There are edge cases where you want them, but as a practical matter your spirit resources are usually just too precious. They should probably be Dwarven Tomb, but that just felt wrong to me.