Strength through sacrifice.
Those who walk the Path of Sacrifice have learned to weaponize their own suffering. Their blood fuels impossible feats of strength, their wounds become a source of power, and every battle is a choice to give more of themselves than any warrior should.
Level 3
True Grit.
You can expend your Hit Dice to recover HP in combat.
Level 7
Reclaimed.
Whenever you get a Fury Die to the maximum, exchange it to recover a Hit die. Whenever you roll fury dice, roll with advantage (roll one extra and drop the lowest).
Level 11
Sacrifice.
You can exspend a Hit die and add the roll to your attack.
Whenever you suffer a Wound, recover one expended Hit Die. As a free action, you may suffer a Wound to recover one expended Hit Die.
Level 15
Endless Endurance.
Whenever you roll one or more Hit Dice, roll each Hit Die twice and use the higher result.
Your maximum number of Hit Dice increases by 2.