When a Fencer’s combat dice are being placed before a combat, one of them can be held in reserve by the player controlling him. This die can be used to resolve any action (attack, defense, <Counter-Attack>, <Master-Strike>, etc.) during any of the combat’s exchanges.
If the player uses it to defend himself, then this die is considered to be a defense die (if, for example, the opponent gets a 1 on his Attack test, then the die is not lost and remains in defense).
If a fighter announces sustained defense and hasn’t used the die that was set aside yet, then it is automatically placed in attack.
Fencer has no effect if the fighter is affected by an effect that forces him to place all his combat dice in attack or defense.