Not much to say - 3x if you're doing a dedicated eagle deck, otherwise forget it. You'll probably have somewhere between 10-15 eligible cards, meaning you'll get at least one most of the time. It also has the Eagle trait itself, so you can chain them.
The Eagles Are Coming!
Event. Cost: 0.
Action: Search the top 5 cards of your deck for any number of Eagle cards and add them to your hand. Shuffle the other cards back into your deck.
"The Eagles! The Eagles!" Bilbo Baggins, The Hobbit
The Hunt for Gollum #5. Tactics.
Totally agree there's no reason to include this in anything other than a dedicated eagle deck. However, unlike similar cards, you get to add all of the targeted cards to your hand, and it's possible to have up to 21 eligible cards (6 allies have the Eagle trait, plus TEAC itself). I actually managed to chain-pull 8 eagle allies at once (first one pulled 3 allies plus TEAC, second one pulled 2 allies plus TEAC, third one pulled 3 allies). I grant you that's nowhere near typical, but it is possible. Add in event recycling, such as Háma or Book of Eldacar, and you can get quite a few eagles in your hand early on. Mind you, I wouldn't use more than one or two event recycles on something like this, but given that it costs nothing and can be extremely helpful early on, it can turn a lackluster start into a powerhouse or give you a lot of options. Use Radagast or Tactics heroes like Hirgon or Mablung to get them out quicker, because those eagles sure are pricey! — medouneu 20