Lore of the Outlands

Player 1 has one job: buff everyone. Use Doomed effects to give everyone cards and resources. After helping everyone to an early start, ideally Player 1 will die - threat, dead heroes, who cares? - and then there will be one less staging card each round. (Also, this allows ally Bilbo Baggins to be played.)

Players 2 and 3 are the muscle here. With about half your deck in hand by the time your first Planning phase starts, Player 2 uses Lord of Morthond to cycle through the deck and build an Outlands army. Player 3 uses Gandalf and Vilya, and all the trappings that go with them, to build another Outlands army.

Player 4 manages the encounter deck, removing the worst cards and reducing the number of cards in staging. Spirit, for helping others with threat reduction, and A Test of Will, also important here. Ideally enemies go to the other players, but Sentinels abound (Erkenbrand, Shadowfax, Aragorn), and this deck has enough attack to protect the flank.

Sideboards here are mostly cards removed from other decks that inspired this group. A few cards might be options for substituting, but mostly they are historical data.