Black Claw

Dragon Resistance. The kobold has resistance to acid damage.

Heart of The Dragon. If the kobold is frightened or paralyzed by an effect that allows a saving throw, it can repeat the save at the start of its turn to end the effect on itself and all kobolds within 30 feet of it. Any kobold that benefits from this trait has advantage on its next attack roll.

Pack Tactics. The kobold has advantage on an attack roll against a creature if at least one of the kobold's allies is within 5 feet of the creature and the ally isn't incapacitated.

Increase Strength. While raging, the kobold's base strength score is doubled.

Unarmored Defense. While the kobold is not wearing any armor, its Armor Class equals 10 + its Dexterity modifier + its Constitution modifier. 

Reckless Attack. The kobold can throw aside all concern for defense to attack with fierce desperation. When it make its first attack on its turn, it can decide to attack recklessly. Doing so gives its advantage on melee weapon attack rolls using Strength during this turn, but attack rolls against it have advantage until its next turn.

Danger Sense.  The kobold gain an uncanny sense of when things nearby aren’t as they should be, giving it an edge when it dodge away from danger. It has advantage on Dexterity saving throws against effects that it can see, such as traps and spells. To gain this benefit, it can’t be blinded, deafened, or incapacitated.

Frenzy. The kobold can go into a frenzy when you rage. For the duration of its rage it can make a single melee weapon attack as a bonus action on each of its turns after this one. When its rage ends, it suffer one level of exhaustion.

Multiattack. The kobold can make two melee attack.

Short Sword. Melee: +4/ +6 (if raging) to hit, reach 5 ft. Hit: 5/9 (1d6+2/ +6 if raging) piercing damage.

Rage. The kobold enters a primal ferocity. For one minute the kobold has advantage on strength check and saves, when using a melee attack weapon the kobold deals an addition +2 damage to damage rolls, and have resistance to piercing, bludgeoning and slashing damage.