Undying Fury

After years of combat and training, you've become more and more determined to become the most powerful of your class in the realm... and then one day, it all almost came to an end. Brought to the brink of death, you were only a moment from ending your journey prematurely. This brought new hunger and fury to your hunger for power. You gain the following benefits:

• +1 Constitution, not exceeding 20
• When death saving throws are failed (3 fails), you may come back with 1 HP, regardless, but permanently lose a part of yourself. If you critically fail, you must lose two parts. Slots you can burn to come back include:
  • Attunement Slots (3 max)
  • 1st-9th Spell Slots (22 max)
  • Special Ability Slots (Varies, includes Rage [below Level 20], Second Wind, Action Surge, Indomitable, Ki Points and anything with Charges)
  • Death Saving Throw Paired Slots (Come back with full HP instead of 1 HP if burned)
    • The next time you die with less death throw slots and beyond, you will roll with reduced chances. If you have no death throw slots when you die, you irrevocably die only being saved by revive spells.
  • You may also sacrifice an immunity or feat if you have one. (Note: This feat cannot be sacrificed.)
• The use of 9th Level 'Wish' and prayers to your gods/patrons to also reset or subtract burned slots is up to the DM. (DM Note: You may use a Coin Flip or Dice Roll to determine the success if you choose.)

The Dungeon Master may decide to let you pick what is sacrificed, may pick for themself, may roll to decide, or even disallow the sacrifice of certain options. The DM may also decide this feat can only be used a certain number of times ever or per level or campaign.