This is my second attempt at a doomed deck, but this time, I'm using Tactics instead of Leadership, as the ability to handle enemies early is more important for a doomed deck than having a lot of resources.
The main focus of this deck is putting damage on Gimli, as he is my tankiest Tactics hero. I can get healing effects in play, and use scrying and shadow effect cancellation to get psuedo-action advantage out of Gimli, as he doesn't exhaust to "defend" against defenderless attacks.
Once the Dead Marshes is finally available, this deck is going in the rubbish.
Resource Acceleration + Card Draw
Use Grima to make cards cost less.
Slap Keys of Orthanc on whichever hero would benefit most: usually Grima.
Use Deep Knowledge and Ancient Mathom to draw cards. Since this deck reaches its maximum potential pretty fast, extra cards don't mean that much one you get Treebeard, a little bit of healing, and a questing ally in play.
Always quest with Grima, Greyflood Wanderer, and Isengard Messengers. Use Galadriel when needed. Since you can pretty easily muster up a lot of willpower with just the Isengard Messengers, you don't need her every turn.
Always travel: this deck has no location control: location lock means death
Defend with Gimli (Captain of Gondor helps, and you can use Henneth Annun Guard on turns where you know he'll take a big hit) until you get Treebeard in play, then the two of them can take turns being attacked.
Use Close Call and the Wizardssssss Voice when you need Gimli for attacking.
Get Dark Knowledge on Gimli to take tons of defenderless attacks (Protip: don't get greedy with damage, always heal Gimli at the end of the round)
Gimli or Treebeard, whoever is ready.
Use Power of Of Orthanc in quests with nasty conditions.
Use Waters of the Nimrodel in quests with busted amounts of direct damage.
The rest are all just cards I'm testing in the deck
Since I just got the rest of the Ring Maker cycle on my birthday (Printed at just the right time, thanks FFG) I'm still trying out a lot of these cards, so I'm not sure what to put in the deck.