8.28.11 EDIT: We have been using this pretty much exclusively. It's very good, and we recommend that you use it in your games as well.
Emissary of War is a variant used for selecting the first player in a game of Omen: A Reign of War. It offers a thematic solution for choosing the first player, as well as a bit of extra strategy. If you’re looking for a new way to determine the start player, feel free to use this variant in any or all of your games of Omen: A Reign of War!
Set up the game as normal, with each player drawing 4 cards and gaining 4 coins. Next, each player selects one (1) Unit card from his hand and places it face down; this is the player’s Emissary. Once each player has placed a face down card, all Emissaries are revealed.
The Cost, Offering, and Strength Values of each Emissary are combined. The player whose Emissary has the greatest combined value is the First Player for the game. In the event of a tie, the Emissary with the highest Strength Value breaks the tie. If a tie still exists, the oldest player is the First Player.
The First Player moves his Emissary card to the discard pile. The other player returns his Emissary card to his hand.
The First Player receives only 2 Wealth Actions during his first turn.