No review for this card yet ? OK I'm writing the first one. It's a versatile ally with an excellent cost-stat ratio, which fits naturally into two main types of deck:

1) Noldor (whether there is Erestor or not). The important thing here is not so much the rate of drawing as the rate of discarding cards from the hand. Eregion Survivor therefore fits very well with the cards Arwen Undómiel, Glorfindel, Elven Jeweler, Steed of Imladris, To the Sea, to the Sea!, or in multi-sphere with Song of Healing, Protector of Lórien, Wandering Exile, Watcher of the Bruinen, Trollshaw Scout, Erestor, or the neutral Guardian of Rivendell.

2) Decks that have access to the spirit sphere and suffer from a chronic lack of draw. We can think for example of a deck with Lothíriel in Rohan.