Path of the Bloodmonger

these barbarians gamble with their lives and use extreme measures to win, like resorting to canibalism

Feast

starting at 3d lvl, you gain the need to feast on humanoid flesh

as a bonus action on your turn while raging, you can make a melee bite attack against a target within 5feet, if this creature is a humanoid ( or edible according to the DM ) and you hit, you bite your target and deal your barbarian level as piercing damage, you regain an equal amount of hitpoints. if the target is not humanoid ( or edible ) other effects may apply, the DM decides these effects.

you gain a thirst for humanoid flesh, at least once every week, you must feast on humanoid flesh to satisfy your hunger.

Blood Fury

starting at 6th level, you can use your bonus action to use one of your hit-die. roll it, you lose this amount of hitpoints

and add a D8 to your attackrolls until the start of your next turn.

you can use this feature an amount of times equal to your Constitution modifier.

the damage increases to a D10 at 10th level, and to a D12 at 14th level.

Bone Collector

you carry a collection of tokens from your former kills.

when an opponent attacks you within 10 feet, you can show it your tokens, it must make a wisdom waving throw against a DC equal to 8 + proficiency + CON

on a failed save, the attacker becomes frightened by you.

you gain disadvantage on CHA checks.

you can use this feature an amount of times equal to your wisdom modifier.

Thrill of death

when your hitpoints are below half of your total hitpoints, you roll an additional damage die on each of your weapons hits