Path of the Reaver

Reavers have unlocked a new level of control over their bodies. They command this untapped energy from deep within blood and bone. The Reaver path however is a double edge sword. The Reaver trades pain for strength, by channeling their own life force into raw power and stealing the life from their foes. Reavers terrorize their enemies, becoming more powerful as they begin to die.

Menacing Visage

At 3rd level, you gain proficiency in intimidation if you don't already have it. Your proficiency bonus is doubled for any checks you make that use this proficiency. 

Rampage

Starting at 3rd level, when you enter your rage, you can choose to take 1d4 damage to enter a rampage rage. When you do so, for the duration of the rage, your melee weapon attacks deal an additional 1d4 damage. You can’t reduce the damage you take, and the damage you deal is the same type as the weapon you use.

Both dice increase to 1d6 at 6th level, 1d8 at 10th level, and 1d10 at 14th level.

Frightening Appearance

Starting at 6th level, when you enter a rampage rage, you can force each creature of your choice within 10 feet of you to make a Wisdom saving throw (DC equals 8 + your Proficiency bonus + your Constitution modifier) or become frightened of you until the end of your next turn.

You may use this feature again as a bonus action on subsequent turns during a rampage rage if you take the same damage as entering a rampage rage. You can’t reduce the damage you take.

Critical Fervour

Starting at 10th level, your weapon attacks score a critical hit on a roll of 19 or 20.

In addition, when you score a critical hit with a melee weapon, or you reduce a creature to 0 hit points with a melee weapon, you can use your reaction to expend one of your hit dice. You gain a number of hit points equal to the number rolled plus your Constitution modifier.

Torrent of Pain

Starting at 14th level, the range of your Frightening Appearance feature increases to 30 feet.

In addition, when a creature is frightened of you at the start of its turn, it takes psychic damage equal to half your barbarian level.