One use only. The banner can be activated at the beginning of any player's turn. No flying movement is allowed and all missile fire is at -2 to hit. All war machines and other ranged attacks that do not use BS may only fire if the player first rolls a 4+ on a D6 (roll for each model). Magic missiles and other ranged spells are not affected. Roll a D6 at the beginning of each player's subsequent turns - on a roll of 1 or 2, the power of the banner is exhausted and it no longer has any effect for the remainder of the battle.