The Gray Ninja uses smoke and alchemy to avoid attacks and gain strength.
Gray Ninja
Primary Skill: Kampo - Turn all gathered Ginseng Roots into stronger Tiger Salve, which can be used to gain strength for a while. (Ginseng root is dropped by the emperor's guard and sometimes by samurai).
Secondary Skill: Evasion - Automatically breaks off the duel/attack if the Gray Ninja's health goes below 10% or below the defender's average damage. Cost: 2 turns.