Path of the Heartfire

Most warriors fear pain. You embrace it — you make it your weapon, your prayer, and your gift.
When your blood spills, the life essence within it does not fade — it flows. You’ve learned to channel your vitality into others through primal rites, blood sigils, and sheer willpower.

When you rage, your wounds shimmer with crimson energy, veins alight like molten metal. Each blow against you fuels your allies’ strength. You don’t heal by mending flesh — you heal by sharing suffering.

Raging Heart

Starting at 3rd level, When you enter your rage, your body becomes a conduit of life and pain. When you take damage while raging, using your reaction you may choose a creature (other than yourself) within 30 ft to regain hit points equal to 2 times your constitution modifier + half the damage you took. You may do this a number of times equal to your proficiency bonus + your constitution modifier. This reset after a long rest.

Crimson Chain

Starting at level 6, Whenever you enter your rage, you may form a life-link between yourself and one creature of your choice that you can see within 30 feet. The link lasts for the duration of your rage or until you fall unconscious. Additionally you can use a bonus action to link to a different creature within 30 feet.

When a linked creature takes damage, You take half the damage instead, and the linked creature takes the remaining half. The damage you take in this way ignores resistances or immunities gained from Rage. In addition While you and a linked creature are within 30 feet of each other, you each have advantage on saving throws against being frightened or charmed.

Martyrs Roar

Starting at 10th level, You can expend one use of your rage (even if you aren’t raging) to unleash a roar that channels your vitality into others, you can activate this ability a number of times equal to your constitution modifier.

As an action, All creatures excluding allies within 30ft must succeed a constitution saving throw or take 2d12 thunder damage. All allies (including yourself) within 30ft regain hit points equal to the damage roll + 2x your constitution modifier. you can activate this ability a number of times equal to your constitution modifier.

Saving Throw DC = 8 + proficiency bonus + constitution ability modifier

Blood of the Unbroken

Starting at 14th level, While raging:

• Whenever you take damage that reduces you below half your maximum HP, you immediately regain hit points equal to half your barbarian level.

• When you would be reduced to 0 HP, you can instead drop to 1 HP and cause all allies within 30 feet to regain 10 hit points + your Constitution modifier. Once you use this feature, you can’t do so again until you finish a long rest.