Ever since Strength of Arms was released, I've been intrigued by mono-Leadership decks built around mustering an ally army and taking advantage of powerful global effects. This is a relatively straight forward take on a mono-Leadership Outlands deck with a few new cards to improve its consistency. It takes advantage of the efficiency of Lord of Morthond and Rod of the Steward - some of the better card draw effects in Leadership - to maintain a steady stream of Outlands allies.
The one new twist here is the inclusion of Prince of Dol Amroth to transform Prince Imrahil into an amazing general. Giving Imrahil the Outlands trait makes Prince of Dol Amroth very powerful, even in the early game. While you won't often see the extra resources from his title until later in the game, getting the willpower bonus from your Ethir Swordsman and the attack bonus from you Knights of the Swan makes Imrahil incredibly powerful. The fact that he has a built-in readying ability which is relatively easy to trigger makes these stats boosts that much more valuable.
While the Leadership version of Prince Imrahil might not at first seem like the best fit for Outlands, there are a few options in this deck for allow for his response. Squire of the Citadel has obvious synergy and is critical to help defend you during the first few rounds as your army is gathering. Likewise Envoy of Pelargir is an inexpensive option that can also be used to chump block. Sneak Attack is included for Gandalf (or Faramir, in a pinch) and has a nice bonus of providing readying for Imrahil. Though it can work as a solo deck, this was designed for multiplayer. In that environment, other players should provide plenty of opportunities to ready the general of your armies.