Mustering the Rohirrim can be a very powerful card in the right deck. It's pretty much the best way to search for rohan allies (especially Eomund/Gamling), besides just straight drawing them, and should trigger every time (if it doesn't you probably don't have enough targets). It is a bummer that it adds only one to hand instead of all targets found, but is still a good search effect.

An excellent option for shoring up a traditional Tactics deck weakness. This is the best way for Tactics to reduce threat, and you even get to "quest" for one more until you're ready to fire it. It gets better in multiplayer, where it's usually at least as good as the 3-cost The Galadhrim's Greeting - beating Spirit at its own game. It is annoying when you can't find a good target, but it won't be long before at least a 2 comes along.

I really like the Westfold Horse-breaker. It is overcosted and that defense strength is pointless, but that ability is awesome and game-saving. Think about a pumped up Gimli, Eowyn, or Treebeard. And it synergizes with the Rohan discard mechanics.

Dunedain Mark is a nice cheap attack boost, and one of the more splashable options. It has synergy with the Weather-Hills Watchman and Rune-Master for easy searching and affordability. Plus, like the other signal,s it can change control.

Bilbo Baggins is rejected mostly due to his insanely high threat cost. But an extra card per round is inarguably powerful and he can still take an action (though granted, that won't be much). He has good synergy with Protector of Lorien for hand pruning. He has very good potential as a Voltron deck target due to in-sphere access to a Burning Brand and Fast Hitch. With Steward, Blood, and Fire,and Lay, you'll want the songs to play them; which warrants Fireside Song. He's got a good deal more to offer than any of you know, including himself.