This legendary magical greataxe was originally commissioned by a loot-rich efreeti barbarian known as al-Satour, and it was forged in the City of Brass by the famed efreeti weaponsmith Edd Nahasiyeh al-Haddad.  It was originally named Harqabel (Hotkiss), but after it was looted from al-Satour's corpse by a human adventurer from Draigcae it was renamed Custwym (which also means Hotkiss).

I designed Custwym with Karlach in mind and in my opinion it is a perfect late-game weapon for her.  I always level her up in the Berserker subclass but it works well in the hands of any of the barbarian subclasses.  Custwym can be wielded effectively by any character proficient in greataxes, but only a wielder who is a barbarian will benefit from one of its most powerful features: Fiery Rage or Fiery Frenzy.

There are two different versions of Custwym, one optimized specifically for a berserker and one optimized for either of the other two barbarian subclasses but suitable for a non-barbarian character.  I tried to create the weapon such that it would differentiate between a berserker and non-berserker barbarian and apply either Rage or Frenzy as appropriate, but I gave up after several fruitless hours of testing different approaches.  Download only one version as they will overwrite one another.

Custwym has a +3 magical enhancement bonus and inflicts an additional 2d6 fire damage on a successful hit.  It has the following additional powers:

• Fiery Rage (only in the Rage version): A wielder of Custwym who is a barbarian (any subclass) enters a state of Rage at the beginning of combat without expending a Rage charge.
  

• Fiery Frenzy (only in the Frenzy version): A wielder of Custwym who is a Berserker enters a state of Frenzy at the beginning of combat without expending a Rage charge.
  

• Immunity to Fire Damage:  Custwym's wielder is immune to fire damage, which is a good thing considering the way the Firestorm ability works (see below).
  

• Firestorm:  Similar to Flame Strike but is always centered on Custwym's wielder, is only 2 meters in radius rather than 3, causes all fire damage rather than a mix of fire and radiant damage, and has a chance of imposing the Burning Fiercely condition.  Can be used once per combat.  Great when surrounded by many lower-level foes.
  

• Incendiary Strike:  Foes hit by Custwym are possibly set ablaze, acquiring the Burning Fiercely condition.
  

• Lethal Weapon:  Custwym ignores Resistance to Slashing damage.
  

• Improved Critical:  The number you need to roll a Critical Hit is reduced by 1.  This effect can stack.
  

Download and Installation:  Download ONE of the two versions: Frenzy version if you plan to use Custwyn as a Berserker or Rage version if you plan to use Custwyn as a Wildheart or Wild Magic barbarian or as a non-barbarian character.  Installation is as for any other *.PAK mod, and all information you need to manually install is found in the info.json file.

How to Find:  Custwym can be found in the turorial chest or can be spawned via console using:

Osi.TemplateAddTo("c09401f0-27ea-41e6-acce-3ebfd706d440", GetHostCharacter(), 1, 1);