Do you like to play allies, but don't pay full price for them? Good news, you don't have to with this deck.
Stacking cost reduction is a great tool in this game to get your cards into play quicker. And with the introduction of Hirgon, this gets even better.
For those of you not familiar with the combo, the deck mostly focusses on getting high-cost Rohan allies into play for next to nothing. This is done by having Hirgon quest successfully alongside a Mounted Théoden. This will allow you to play a ally from your hand with a reduced cost of 1. Then you can apply the Doomed effect from Gríma which lowers it by 2 and provides a resource with Keys of Orthanc. Put the keys on Hirgon for this to work (or have The Storm Comes in the VD). This resource can be spend for a reduction of 3 for any ally. If that ally is from the Horse nation of Rohan, Théoden reduces the cost to a potential 0 cost for allies like Déorwine and the new Elfhelm. If you lack any of the reductors, even expensive cards like Horseback Archer and Westfold Outrider become affordable.
Guthlaf is already discounted by 1 since you control a Rohan hero, he is also Sentinel thanks to Hirgon being Gondor traited.
For the cards, I opted to include some carddraw (Gléowine gets discounted from Théoden) and adding the Master of Lore for discounts on Ents.
Envoy of Pelargir gives you a resource back after you play her, and Bofur can also be cheated into play if you quest unsuccessfully. He is also a good countermeasure to boost your in case you would lose the quest by a few points.
Attachments mostly go onto Théoden to help you out in case you don't get an ally out. The Red Arrow adds more people to the party.
I don't think the deck is at full potential yet, but it is nice to save resources this way in case you need them for Assault on Osgiliath, Treachery of Rhudaur and other quests which ask that you place resources on cards. It is also a nice counter to Druadan Forest, as you can discount your cards so that you can't get prowled as much. I added some Healing to counter the Archery from that quest.
Feel free to expand on this idea of a Discount Deck
--UPDATE VERSION 2-- Thanks to GamgeeGardens
Slight balancing of allies and carddraw events.
Cutting cards to 50, which was difficult
Sideboard includes a discount offer with A Very Good Tale and access to