Beravor is a great hero. Not perfect, but great nevertheless. Let me explain why. First, her stats: Those are the typical ranger stats, 2 , 2 , 2 and 4 . Not quite extraordinary. And still, it somewhat makes her stand out from the rest of the heroes - the female heroes, that is: She is one of only four female characters in this game with 4 hitpoints (the other three being another ranger, Idraen, Galadriel, and Na'asiyah), and there are none with 5 (isn't that kind of sexist, I wonder?). Those 4 HP make her a lot more reliable in defending compared to e.g. Eleanor. The other stats are not very impressive each, but are not bad at all either, yet, they add up to an impressive threat cost of 10. This may be the biggest drawback of the card: Beravor is a very good glue hero, being able to flexibly defend, attack or quest, but she can only use her stats once per round, or not at all if you choose to use her ability, and this effectively makes her a 2/0/0 hero (or 0/2/0 or 0/0/2, or even 0/0/0), which is really not worth an initial threat of 10.
Luckily, Beravor has more to offer than just her stats and threat cost. She has got two very useful traits, Ranger and Dúnedain. This allows for some action advantage that is not restricted to only putting Unexpected Courage on her (which is of course a great attachment for her, nevertheless). She is also eligible for Wingfoot and Steed of the North, two cheap but potentially very powerful action advantage cards that allow Beravor to contribute her respectable 2 to the quest and then ready to attack, defend or draw 2 cards. Although she is not really build towards the Dúnedain archetype (since that was developed later in the game), she can profit from Descendants of Kings, and she is a valid target for Tale of Tinúviel. She also gives access to Ranger of Cardolan's Combat Action and Ranger Summons. Dúnedain Pipe can be attached to her for even more card draw, and she can make use of Blood of Númenor and Gondorian Fire if you manage to get some resources on her. The great thing about her balanced statline is that it is quite easy to make her respectable in every aspect of the game: With Protector of Lórien she can quest for 3 at the cost of one discarded card, which is the second highest amount of you can find in the game, or defend for 3 (or 4 or 5 if you are willing to discard more cards), which is not bad, either, especially considering her 4 that provide some peace of mind when blocking against more powerful enemies. If you are willing to invest a few resources in her, she quickly becomes a powerful jack-of-all-trades.
And I haven't even talked about her ability. When I first saw her, I did not quite understand how powerful it is to draw 2 cards, especially when you can use the hero to do something useful instead. But playing with her for some time, I quickly realized what drawing 2 cards (probably each round) can mean. I started to leave enemies engaged with me for an additional round in order to not use up her action (which, as I found out, neatly synergizes with the Dúnedain tactic of keeping enemies engaged with you), and instead drew cards. And three instead of one card drawn per round is a difference as huge as it can get. Beravor allows you to really get your deck going and to find the powerful allies you need, or provides the digging necessary to get a diversity of combos going. If you somehow manage to get action advantage out of her, you are a lucky person, enjoying either 2 , 2 or 2 and an additional 2 cards per round (all about her is 2, isn't it?). And she can target other players, too, which is great. For example, she can support a deck that really struggles with card draw and help it to find all the powerful weapons its heroes need. I would go as far as to say that her flexibility and ability even justify putting e.g. Wingfoot and an Unexpected Courage on her. She is just that great, and with some care and investment, she can handle most things the encounter deck throws at you (and draw cards, did I mention that already?). She is a hero that, I would say, is one of the few that really deserve action advantage.
So, why is she not perfect? Because she needs some efforts to really make her shine, and she tends to be a Dáin Ironfoot most of the time, sitting around and waiting, hoping not to be needed in combat and thus staying ready most of the time, and then being used to draw. Which is not wrong at all, I just feel like it does not do her justice. Moreover, she also adds 10 to your initial threat, which is not too much, but still something to be careful about. And then, she needs some time to really make up for that threat . But if you can afford that initial threat or are okay with it because the drawing is so invaluable (which it really can be), she is awesome, and one of the best drawing options in the game, flexilbe and repeateable.
Speaking of awesome, Beravor's card art I consider to be the best in the game. It really gives personalitiy to her, but still leaves her vague enough not to force one into a specific view of her. She looks young, and yet not really, beautiful, but not perfect or elven-like, and the light through the leaves in the background is just stunning. I also love the piercing blue eyes and the powerful grip around her staff, showing that she is one of the sturdiest women in middle-earth, and not some fragile thing like Arwen Undómiel. And I think Beravor is so awesome a hero that she really deserves that astounding art.