Amaru

Superiority Dice. Amaru has 3 superiority dice, which he can either spend for certain actions or spend as part of his attack action to hit. His superiority die type is d8. He gains all his depleted superiority dice back on a short or long rest. 

Rapier. Melee Weapon Attack: +5 to hit, reach 5 ft.. Hit: (1d8 + 3) piercing damage.

Rally. As a bonus action Amaru can spend a superiority die to rally an ally within 30ft. The rallied ally gains temporary HP equal to the superiority die plus 2. (1d8+2).

Defensive Duellist. When hit by an attack Amaru can use his reaction to parry, increasing his AC by 2. If he spends a superiority die he can make an opportunity Attack adding the die to the hit bonus. (1d8).