TEXT: 2/26/2019
  Path of the Caldera | GM Binder
  https://www.gmbinder.com/documents/print/-LTG33UyTSk2_Upsdr_T
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  Path of the Caldera
  Path of the Caldera
  When it comes to comparing the outlets of rage for Mother
  Nature herself, nothing holds a candle to the sheer destructive
  power of a volcanic eruption. Barbarians of the Path of the
  Caldera would be inclined to agree, emulating and recreating
  its effects upon the world. The battlefield itself warps to match
  their temper, spreading smoke and lava to confound their foes,
  culminating in the magnums opus of the Caldera, an
  unmatched explosion of overwhelming heat.
  Barbarians who follow this path exhibit traits of the
  volcanic origin of their abilities in their rage, physical
  manifestations that serve as a warning for that which is to
  come. You can choose traits yourself, or roll on the table
  below.
  Molten Rage Quirks
  d6 Quirk
  1 Your skin bubbles and pops
  2 Glowing cracks radiate up and down your body
  3 Blood spilled by you hisses, painfully hot
  4 Your hair billows like flickering flames
  5 Smoke pours from your mouth and eyes
  6 The air around you shimmers like a mirage
  Path of the Caldera Features
  Path of the Caldera Features
  Barbarian Level
  Feature
  3rd
  Ashbringer, Call the Caldera
  6th
  Pyroclast
  10th
  Magma Chamber
  14th
  Eruption
  Ashbringer
  Ashbringer
  At 3rd level, when you adopt this path, you become acclimated
  to hot climates, as described in chapter 5 of the Dungeon
  Master's Guide. Additionally, you can breathe normally in a
  smoke-filled or similar environment.
  Call the Caldera
  Call the Caldera
  Beginning when you choose this path at 3rd level, when you
  enter your rage you can erupt, transforming the area within up
  to 5 feet of you into a volcanic landscape until your rage ends.
  This area is difficult terrain for creatures other than you,
  lightly obscured, and when a creature other than you starts it
  turn within it or enters it for the first time on a turn, it takes an
  amount of fire damage equal to your Constitution modifier.
  The area your eruption transforms grows larger as you reach
  higher levels in this class, increasing to 10 feet at 10th level,
  and 15 feet at 14th. Additionally, while you're raging, you have
  resistance to fire damage.
  Pyroclast
  Pyroclast
  At 6th level, you can use the unstable nature of your power to
  become airborne momentarily. While you're within the area
  created by your Call the Caldera feature, you can use your
  bonus action to leap to a space you can see within 30 feet of
  you.
  Art Credits
  Art is Fire Bovine by Rudy Siswanto.
  Magma Chamber
  Magma Chamber
  At 10th level, you can cast the meld into stone spell, but only
  as a ritual. When you do so, the surface of the object bubbles
  with a simmering outline of your form, and you can speak and
  hear normally.
  Eruption
  Eruption
  Starting at 14th level, as an action on your turn you can cause
  the area created by your Call the Caldera feature to explode
  as a 15-foot radius, 120 foot high cylinder of molten material
  centered on itself. Each creature other than you within that
  area must make a Dexterity saving throw. A target takes fire
  damage equal to twice your Barbarian level on a failed save, or
  half as much damage on a successful one. You can use this
  ability only once per rage, and until the end of your next turn,
  your rage can't end early as a result of not attacking a
  creature.
  
SOURCE: textdata/thevault/Dungeons & Dragons [multi]/5th Edition (5e)/3rd Party/Homebrew/BladeBlot Brew/Barbarian - Path of the Caldera (BBB).pdf