All you need are four ingredients: Spirit Eowyn, Galadriel, Nenya, and Herugrim. I attached Nenya to Galadriel and Herugrim to Eowyn. I exhausted Nenya and Galadriel to add her willpower to Eowyn's, discarded one card as did my buddy, and there you have it, Eowyn with 11 attack.

It was for attack an enemy, or for quest in battle quest?

Take care of Nenya, it is quest action

Yeah, unfortunately Nenya is Quest Action so you can use if you can make attacks in the quest phase somehow.

If you're going with combos you can do this one, it doesn't start with as much will as Eowin, but it works to snipe enemies during the Quest phase, and with Steed of the Mark you can take advantage of the will bonus for questing and combat. You'd need a leadership friend in the game, or a leadership hero in the lineup, so maybe Sam can fill out the ranks, and with a Stewart of Gondor on Hama he will have plenty of resources to pay for HUTB and SOTM.

http://hallofbeorn.com/Cards/Details/Hama-TLD

http://hallofbeorn.com/Cards/Details/Herugrim-ToS
http://hallofbeorn.com/Cards/Details/Dunedain-Cache-TDM
http://hallofbeorn.com/Cards/Details/Hands-Upon-the-Bow-SaF
http://hallofbeorn.com/Cards/Details/Galadriel-CS

http://hallofbeorn.com/Cards/Details/Nenya-CS

http://hallofbeorn.com/Cards/Details/Steed-of-the-Mark-TMV

You can also do either of these

http://hallofbeorn.com/Cards/Details/Glorfindel-FoS

http://hallofbeorn.com/Cards/Details/Nor-am-I-a-Stranger-CatC

http://hallofbeorn.com/Cards/Details/Herugrim-ToS

http://hallofbeorn.com/Cards/Details/Fair-and-Perilous-AtE

or

http://hallofbeorn.com/Cards/Details/Eowyn-Core

http://hallofbeorn.com/Cards/Details/Elf-friend-TToR

http://hallofbeorn.com/Cards/Details/Herugrim-ToS

http://hallofbeorn.com/Cards/Details/Fair-and-Perilous-AtE

It was for attack an enemy, or for quest in battle quest?

Take care of Nenya, it is quest action

Thank you! I realize I have been doing it wrong all this time!

You could add Strider to her, also Celebrian's Stone will work.