Path of the Demon Blood

Barbarians on the path of the Demon Blood are the unfortunate victims of evil magic of the outer planes. Whether through an awakened infernal bloodline (of which tieflings are sadly susceptible), a dark deal with a devil, or having taken a cursed item, these barbarians find themselves possessed with voices that are not their own, and which demand fire, havoc, and sin. Good barbarians fight these urges, others attempt to harness the well of power inside them, and still others give into every tempting voice they hear. Either way, their path is a solitary one, and their boiling blood gifts them with incredible power.

Demon Stink

Starting at level 3 when you take the Path of the Demon Blood, you can identify fiends by smell while they are within 30 feet. You can make a Wisdom (Perception) check to identify the nearby presence of a fiend, even if it is invisible, polymorphed, or sealed away in a magical object.

Immolation

Starting at 6th level, your barbarian rages begin to let loose the fiendish power inside you. While enraged, you are sheathed in fire. Combustible objects within 5 feet of you light on fire, and creatures within 5 feet are dealt 3 fire damage per turn. You are immune to this damage, but this feature does not grant you resistance to any other sources of fire damage.

Boiling Blood

At 10th level, the desire for chaos and destruction consumes you. You may rage one additional time than what is indicated in the Rages column of the barbarian table.

Unchained Rage

Starting at 14th level, you can begin to harness the power of the demon inside you. You can expend charges of Rage to cast Circle of Death as a 6th level spell with no spell component other than a howling scream. Constitution is your ability to cast it, and its save DC is equal to 8 + proficiency + your Constitution modifier. When cast in this way, Circle of Death must be centered on you and deals damage to you, though you always succeed on the Constitution saving throw to resist the damage.