A subclass designed simply to empower and add to the base barbarian class. "Ill take more barbarian on my barbarian please."

Debilitate

Starting at 3rd level the player can expend any amount from their current number of hit die available and add them to any reckless attack damage roll and/or any strength or constitution skill or ability check. The player can also expend a single hit die on any strength, constitution, or dexterity saving throw before the save is determined.

Adrenaline

Starting at 6th level the player can ignore damage from any individual instances of damage taken equal to their proficiency bonus, after the duration of their rage the player takes all previously ignored damage (unless already at 0 or less hit points).

Additionally, the player can’t be charmed, frightened, put to sleep, or feel pain while raging. If the player is charmed or frightened when they enter their rage, the effect is suspended for the duration of their rage.

Rabid

Starting at 10th level when the player takes the attack action they may use their bonus action to make an attack against up to two additional creature within the player's melee range at disadvantage. Additionally when the player is attacked by a creature that is within their melee range, the player can use their reaction to make a melee weapon attack against that creature also at disadvantage.

During their rage the player may apply their constitution modifier (minimum of +1) to their strength based weapon attack and damage rolls. When the player uses this feature they take damage equal to their constitution modifier (minimum of 1 damage).

Momentum

Starting at 14th level during the player's rage whenever they hit with a melee weapon attack consecutively they deal an escalating amount of weapon damage adding an additional Weapon Dice that grows after the second consecutive Hit. The players second Consecutive hit adds a D4 weapon damage die growing to a maximum D12 Weapon damage die on their sixth consecutive Hit. This effect ends when a target the Player engaged in combat dies, the Player misses an attack, and or after the duration of their rage.

The player's speed increases by an additional 10 feet while they aren’t wearing heavy armor. Additionally when the player performs a critical hit they gain three D12 hit die.