Battlefield conditions change the environment of the battlefield. When assembling your force, you can include a single battlefield condition. A battlefield condition has no point value and does not count toward the point total of a force.
During Step 2 of Preparing For Battle, after starting areas have been determined, all players reveal their battlefield condition card simultaneously.
A battlefield condition alters the rules of the game as explained in its card text. Battlefield conditions affect only characters on the map. If multiple copies of a battlefield condition that causes a die (or dice) roll to occur are in play, roll the die (or dice) for each copy in play. If a player’s force is defeated, his or her battlefield condition remains in effect until the end of the game.