Barvjak of Stygia

Relentless Frenzy. When Barvjak hits an attack, his movement speed is increased by 30 ft. (a maximum of 150 ft.) for 1 hour.

Combine Swing. Once per turn, if Barvjak hits with a frigid cleaver attack, he can use his bonus action to make another frigid cleaver attack.

Missed Opportunity. Once per round, if Barvjak fails to hit on a melee attack, he gains advantage on his next attack roll.

Frigid Cleaver. Melee Weapon Attack: +6 to hit, reach 10 ft., 1 target. Hit: 15 (2d12 + 2) slashing damage. Upon hit, the target must succeed a DC 14 Constitution saving throw. Upon failure, the target's movement speed is decreased by 15 ft.

Rage. Once per turn, Barvjak can rage using a bonus action. While raged, Barvjak has advantage on all Strength checks and Strength saving throws, as well as resistance to bludgeoning, piercing, and slashing damage.