Grant 1 stack of Concentration for every 4 seconds when Samir receives no damage. Each stack increases damage dealt by 3%, and can stack up to 4 times. After being hit, Samir loses 1 stack of Concentration, up to 1 stack per 1 second.

Grant 1 stack of Concentration for every 4 seconds when Samir receives no damage. Each stack increases damage dealt by 4%, and can stack up to 5 times. After being hit, Samir loses 1 stack of Concentration, up to 1 stack per 2 second.