Bosses & Endgame

The Arbiter of Ash

The Arbiter of Ash the pinnacle boss of The Burning Monolith. The regular version of this encounter can be accessed by bringing three Crisis Fragments to the

4 min read·Updated 2026-07-10·Editor score 96/100
The Arbiter of Ash
Editor's TakeHard96/100

The Arbiter of Ash broken into prep checklist, phase priorities, and loot expectations — what to do before you zone in.

Best for: Map runners and endgame progression

⚡ Pro Tips

  • Beam: "You have failed... Humanity has failed... It must start again"/"Accept your finality"/"Behold... The Burning Horizon" - Channels a long beam of fire
  • Atlas progression rewards consistency over rushing tier — stabilize loot first.
  • Flask charge management wins boss fights more than an extra support gem.

✓ Quick Checklist

  • Beam: "You have failed... Humanity has failed... It must start again"/"Accept your finality"/"Behold... The Burning Horizon" - Channels a long beam of fire
  • Sword Combo: "Bound by destiny" - Cleaves his sword around 2 or 3 times while moving.
The Arbiter of Ash
The Arbiter of Ash
Level(s)74 (quest)82 (regular)
Location(s)The Burning Monolith
DamagePhysical, Fire
Resistance(s)75%75%75%

The Arbiter of Ash the pinnacle boss of The Burning Monolith. The regular version of this encounter can be accessed by bringing three Crisis Fragments to the Burning Monolith.

Players can have unlimited respawn attempts in his regular version, and technically 2 respawn attempts in the non-quest version.

Skills

Phase 1

  • Beam: "You have failed... Humanity has failed... It must start again"/"Accept your finality"/"Behold... The Burning Horizon" - Channels a long beam of fire
  • Flaming Gales: "A plague-born... Hungry for Her milk... Yet ruthlessly pillaging her... Of all she could give"/"Foul belligerent gods... Ascendants of the feeble... Cursed Her supple flesh... and mind"/"Corruption plagues... and Her wounds worsen... The cleansing foretold is.. preordained" - Covers the arena in a red mist, leaving a strip in the middle. When he points with his weapon, the areas covered in red mist are covered in a flaming gale. Repeats several times in different directions, facing the way the strip follows.
  • Falling Flame Seed: "Rapture of flame"/"Sacred Fire of the Mothersoul, you are called upon" - A seed of fire fall from the sky in sequence, creating a ring. The area outside of the ring explodes with fire after a short duration.
  • Falling Flame Seed Combo: "Fields of Ash... and chasms of Flame... Shall restore Her glory" - Teleports quickly, causing several seeds of fire fall from the sky in sequence, each creating a ring. The area outside of the ring explodes with fire after a short duration.
  • Sword Combo: "Bound by destiny" - Cleaves his sword around 2 or 3 times while moving.
  • Sword Slash: Flies into the air then slams with his sword, creating a long shockwave forward.
  • Flying Slam: "Acquiesce, mortal" - Flies into the air them slams the ground in a large area.
  • Bullet Hell: "Endless ravaging pain"/"She revokes your existence" - Fires slow-moving fire orbs which fire several small projectiles in all directions periodically.

Phase 2

At <50% health, The Arbiter will briefly become immune, teleporting to the centre of arena and changing his hand sceptre into a sword. Continues to use attacks from the previous phase.

  • Sword Beam: "Accept your finality" - Points forward with his weapon, creating a wide flaming gale while shooting a long beam of fire.
  • Donut Bullet Hell: "The Fourth Edict beckons" - Creates a flaming orb which fires a ring of small projectiles periodically. The entire ring explodes in a chain reaction on contact.
  • Summon Seeds: Periodically creates a Chill Seed and Blackflame Seed at opposite sides of the arena. Once activated, their ground effects last indefinitely until cancelled out by the opposite seed. Chill Seed: "Let fear of the void... Control you... So She may be reborn" - The Arbiter will embed his sword into the white seed, covering the arena in Chilled Ground with a 30% action speed slow. The Arbiter will also deal extra cold damage for 20 seconds. Blackflame Seed: "Tainted morality... Coursing through time to find you" - The Arbiter will embed his sword into the purple seed, covering the arena in Blackflame ground which prevents Life and Energy Shield Recovery. For 20 sec after embedding his sword in the purple seed he will apply a Blackflame debuff to the player when hit, preventing Life and Energy Shield Recovery.
  • Slow Flame Seed: "Rapture of Flame" - Creates a single large donut bomb in front of the boss. The boss may occasionally charge up a Sword Beam which fires into the ring just before it detonates.
  • Combo Slam: "You tarry... You rot... You... Another vessel of sorrow" - Flies into the air and creates a line of fire across the arena, then performs three slams from the air, with a larger area each time.

Drops

RegularUber
Sample size100100
GuaranteedUniqueMorior InvictusMorior InvictusGrand RegaliaArmour: (540-675)Evasion: (492-615)Energy Shield: (184-230)Movement Speed: -4.0%Requires Level 65, 41 Str, 41 Dex, 41 Int(300-400)% increased Armour, Evasion68%41%
Solus IpseSolus IpseGrand VisageArmour: (220-264)Evasion: (200-240)Energy Shield: (75-90)Requires Level 65, 36 Str, 36 Dex, 36 Int+(60-100) to maximum Mana25% increased Light Radius(150-200)% increase4%23%
Sine AequoSine AequoGrand ManchettesArmour: (150-180)Evasion: (135-162)Energy Shield: (42-51)Requires Level 65, 32 Str, 32 Dex, 32 Int(10-15)% increased Skill Speed(150-200)% increased Armour, Evasion6%6%
Ab AeternoAb AeternoGrand CuissesArmour: (267-311)Evasion: (243-283)Energy Shield: (75-87)Requires Level 65, 34 Str, 34 Dex, 34 Int(15-30)% increased Movement Speed(200-250)% increased Armour, Evasion20%8%
Sacred FlameSacred FlameShrine SceptreSceptreSpirit: 100Requires Level 55, 17 Str, 38 IntGrants Skill: Level (18-20) Purity of FireGain (40-60)% of Damage as Extra Fire DamageAllies in your Presence G<1%7%
Prism of BeliefPrism of BeliefDiamondLimited to: 1+(1-3) to Level of all <Random skill> SkillsCorruptedEntropy can be reversed.Place into an allocated Jewel Socket on the Passive Skill Tree. Right cli2%15%
The Arbiter's Reliquary KeyThe Arbiter's Reliquary KeyThey knew the truth, but had no choiceGenerations hence, perhaps, one day,there would be a chanceOpen a Reliquary portal by using this item at The<1%<1%
Additionaldrops
Arbiter's IgnitionArbiter's IgnitionSupport, Lineage, Spell, FireCategory: Arbiter's IgnitionRequires Level 65Support Requirements: +5 IntSupports Fire Spell Skills causing you to gain Elemental Archo6%6%
Global lineage support gems and higher level uncut gems

Videos

Lore

The Mysterious Entity that steals the Flame Seed after the Arbiter of Ash is defeated is Tecrod.

Version history

VersionChanges
0.5.0Reduced the Chaos Damage bonus granted to The Arbiter of Ash when he plunges his sword into the Chaos Sphere. Reduced the duration of the damage bonuses The Arbiter of Ash gains after plunging his swo
0.5.0The Burning Monolith along with Arbiter of Ash has been moved into the Fortress. There are now two versions of each pinnacle boss, the Quest version and the Infinite Farm version. As such Primary, Sec
0.4.0To unlock the ability to craft a tablet beyond 2 modifiers you need to have defeated the Arbiter of Ash. Arbiter of Ash no longer drops a rare corrupted Tablet. The Arbiter of Ash will now phase trans
0.3.0The Arbiter of Ash Boss fight is now a static difficulty encounter with infinite portals (previously only infinite portals at difficulty 0). The rewards of this fight now match the previous difficulty
0.2.0fPinnacle Bosses now have unlimited respawn attempts at Difficulty 0.
0.2.0The various endgame quests that lead to the Arbiter of Ash encounter have been consolidated into a single quest. All Bosses that are affected by Difficulty and Simulacrum can now drop all of their spe
0.1.1cFixed a bug where the "you have died" screen could persist after being revived in the Arbiter of Ash Boss fight when using a controller.
0.1.1To address the problem of only having one attempt at the Arbiter of Ash Boss fight, you will now have up to five respawn attempts at this fight. Respawns can only be triggered by the person who put in
0.1.0eFixed a bug where the Arbiter of Ash area level wasn't being increased with difficulty.
0.1.0Introduced to the game.

References

The Arbiter of Ash
The Arbiter of Ash

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