This is a multiplayer deck, which may look a bit strange, but the reasoning is explained. Makes it very easy to gauge when you can play the newer "The Free Peoples" card...

http://ringsdb.com/decklist/view/6475

Clever, I like it. Don't Haldir and Aragorn's ability work at cross-purposes, though? Rivendell Bow could either buff Haldir or let Aragorn trigger his ability with non-engaged foes. With Denethor in the defender role, I'm surprised not to see Armored Destrier, at least in the sideboard.

Yeah, those two heroes are a bit at odds, hence I'd not try it solo; depends how many enemies appear and what other players can engage. The line-up came mostly from Trait variety, as I've only ever played them in two different hands. Originally I had Denethor with Elfhelm and Leadership Aragorn (also 8 traits), which probably worked better, but I wasn't enjoying it as much.

I initially had Armored Destrier, but it didn't seem likely to have 2 enemies engaged in multiplayer when defending, especially if Aragorn can take one out right away. Still, I could have sideboarded it.

I didn't even think about Rivendell Bow. Great suggestion, especially with it not being restricted, though I'm not sure what I'd sub out. At minimum, it should definitely be in the sideboard.