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. A problem with this game is the only way to get reliable defenders is by buying the Steward's Fear or Heirs of Numenor, as enemies hit too hard to justify having 2-3 Armor defenders. I intend to circumvent that weakness of low Armor values by using healing and HP boosting.
Resource Acceleration + Card Draw
Use Grima to make 3 cost cards cost 2.
Slap Keys of Orthanc on whichever hero would benefit most: Gimli if you have Citadel Plate in hand, Eowyn if you have multiple Spirit cards, or default to Grima.
Use Gleowine and Deep Knowledge to draw cards. Since this deck reaches its maximum potential pretty fast, extra cards don't mean that much one you hit Citadel Plate and a couple healing cards.
Always quest with Eowyn, Greyflood Wanderer, and Isengard Messengers.
Quest with Grima if you have no questing allies in play.
Always travel: this deck has no location control: location lock means death
Defend with Gimli until you get Treebeard in play, then the two of them can take turns being attacked.
Get Citadel Plate and 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)
Ents. Just ents.
Gimli (if he's ready)
Throw in Forest Snare and Protector of Lorien for quests with really big enemies.
Use Power of Of Orthanc in quests with nasty conditions.
Don't bother using this deck if you have Beregond or Gondorian Shield: they're a lot better than this.