This deck is meant to be played with "Charge of the Light (Rohirrim) Brigade (On Eagles" deck. While the other deck can operate in solo, this deck is meant to be played in support, providing questing power, shadow cancelation, boosts through Elfhelm's mount boosting.
In the early rounds use Elfhelm and Théodred to quest. I know its not thematic, but Steward of Gondor goes on Dúnhere to help fund all the spirit cards. Théodred's extra resource can either help Elfhelm pay for leadership cards or to Éowyn to fund expensive tactic cards.
Once both decks get going it is really fun as you feel you are charging through quests, locations, and enemies alike.