Defeat Aul, the Crystal King - Path of Exile

Fortuitous Feud challenge: Defeat any three of the following bosses in the specified ways.

Defeat Aul, the Crystal King without allowing any of the Crystalline Cocoons to fully open

Aul, the Crystal King is a boss that can only appear inside The Crystal King's ThroneThe Crystal King's Throne nodes within the Primeval Ruins biome, inside The Azurite Mine in Delve, at a depth of 130 or greater.

  • Location: Primeval Ruins

Primeval Chamber is a type of delve node that spawns in Primeval Ruins. It is similar to Ruined Chambers of Vaal Outpost delve nodes with light pads that need to be stood on for a few seconds to clear the monsters. It appears to be a great place to obtain maps due to the possibility for Abandoned Charts chests and can contain 3 or more of these chests in the area. This area contains the six linked sockets Crafting Bench recipe.

The node name is “The Crystal King’s Throne” with a wolf-like icon.

The Crystal King's Throne

Crystalline Cocoons

This boss fight contains 8 Crystalline Cocoons around the arena. These cocoons will open and shoot homing projectiles if the player is near. During Aul’s throne phase, the Spectral Shield Charge can destroy the cocoons if they explode near them. At some point during this fight, Aul will clap his hands together, create Darkness, and spawn minions. In order to avoid the Darkness from stacking up, the player can either strategically use flares or hug the small flares that drop from some of the minions.

Spectral Shield Charge: Aul retreats upon his crystal throne in the center of the arena and fires a total of 6 spectral copies of himself. These clones shield charge towards the player with exploding steps and then explode on impact. The clones are fired one at a time in a slow rate of succession. The base duration for this attack is 10 seconds and deals 75% Cold Damage and 25% Physical Damage. These clones can open the Crystalline Cocoons by damaging them, but will trigger the Crystalline Barrage attack.

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Skills

Name Description Strategy
Default Attack Aul does a close-ranged melee slash attack. 75% of Physical Damage Converted to Cold Damage
Spectral Shield Charge Otemba! - Aul shields himself in the center of the arena and makes himself untargetable and invulnerable. He launches several spectral Shield Charge proxies in a sequence toward the player, leaving crystal trails that deal damage and block movement. If the copies hit the Crystalline Cocoons at the edges of the area, the Cocoons will burst and leave a permanent pool of cold damage over time, and spawn an Azurite monster that fires projectiles when you are nearby. Base duration is 10 seconds. Cooldown Time: 40 Seconds. Projectiles Pierce all Targets. Use blink skills to travel between the gaps between Crystalline Cocoons.
Crystalline Arc Aul encases his weapon with crystals before doing a Cleave attack. He creates 11-15 ice crystals in the arc of his swing. At the end of his swing, the projectiles fly out in a 180 to 270 degree arc. 75% of Physical Damage Converted to Cold Damage, can be avoided by staying behind Aul during the aniamtion.
Crystal Nova Zem Zamarr! - Aul charges his sword before plunging it into the ground. Several markers will show on the floor in an area around him. Shortly after, Aul will fire a rippling nova, causing crystal spikes to emerge from the markers, dealing heavy damage. 75% of Physical Damage Converted to Cold Damage. Throwing Dynamite mid-animation will stun him, interrupting the attack.
Crystalline Fissure Aul thrusts his sword forwards with a Tectonic Slam-style attack, creating a number of crystal fissures that move throughout the arena. At the end of their duration, or if they hit a player, they will explode creating a giant crystal spike. 75% of Physical Damage Converted to Cold Damage.
Whirling Blades Aul does a Whirling Blades attack. 75% of Physical Damage Converted to Cold Damage.
Crystalline Barrage / Bullet Hell Hur-nak! - If more than 4 Crystalline Cocoons are broken, Aul will encase himself in crystals and being firing a continuous barrage of Ice Spears for a duration, tracking the player. Any broken Crystalline Cocoons will also fire a constant barrage of ice projectiles toward Aul. Throwing Dynamite mid-animation will stun him, interrupting the attack.

Tips and Tricks

This is a compiled list of some precautions one should consider before facing this challenge.

Cold Damage Mitigation:

  • Purity of Ice – Grants an additional 4% Maximum Cold Resistance.
  • Sapphire Flask – Reduces Cold damage taken by 20% during flask effect.
  • Aquamarine Flask – Grants a 20% chance to avoid ALL Cold Damage during flask effect.
  • Fortify – Grants 20% reduced damage taken from ALL damage types.
  • Soul of Yugul – Grants 25% chance to Reflect Enemy Chills and Freezes and 5% reduced Cold Damage taken
    if you’ve been Hit Recently.
  • “of Heat” – Flask mod that removes freezing and chill effects during flask effect.

General Rule of Thumb:

  • Destroying the Cocoons can prevent them from firing projectiles, but will empower the Crystalline Barrage Phase

Aul, the Crystal King

Level(s) 83
Location(s) Primeval Ruins
Modifier(s)
  • Cannot be fully Slowed, Knocked Back, or Stunned
  • 80% reduced Cruse Effectiveness
  • 2100% Maximum Life
  • 40% Fire, Cold and Lightning Resistance
  • 25% Chaos Resistance

Aul, the Crystal King

Delve Atlas Passive Tree

Count Name Category Description
8 Delve Sulphite Quantity Normal
  • Voltaxic Sulphite Veins and Chests in your Maps contain 3% increased Sulphite
1 Mining Byproducts Notable
  • Sulphite Veins and Chests in your Maps have 10% chance to also contain an equal amount of Azurite

Delve Atlas Passive Tree

Count Name Category Description
1 Mad Devotion Notable
  • Your Maps have 4% chance to grant an additional Niko Mission on Completion

Delve Atlas Passive Tree

Count Name Category Description
6 Delve Mission Chance Normal
  • Your Maps have 1% chance to grant an additional Niko Mission on Completion
1 Sulphite Infusion Notable
  • Your White Tier Maps grant 200 additional Voltaxic Sulphite on Completion
  • Your Yellow Tier Maps grant 350 additional Voltaxic Sulphite on Completion
  • Your Red Tier Maps grant 500 additional Voltaxic Sulphite on Completion

Delve Atlas Passive Tree

Count Name Category Description
1 Guarded Hoards Notable
  • Voltaxic Sulphite Veins and Chests in your Maps have 5% chance to contain double Sulphite
  • Sulphite Veins and Chests in your Maps are guarded by Sulphite-hoarding Monsters
1 Packed with Energy Notable
  • You gain +1% to all maximum Elemental Resistances for each Voltaxic Sulphite Vein or Chest found in your Maps
  • You gain 35% increased Damage for each Voltaxic Sulphite Vein or Chest found in your Maps
  • You gain 15% increased Movement Speed for each Voltaxic Sulphite Vein or Chest found in your Maps

    • Reminder Text:

  • (Maximum Resistances cannot be raised above 90%)

Aul, the Crystal King Drops

Item Lvl.
Crown of the Tyrant Crown of the Tyrant 58
Ahkeli’s Meadow Ahkeli’s Meadow 49
Uzaza’s Valley Uzaza’s Valley 49
Putembo’s Mountain Putembo’s Mountain 49
Aul’s Uprising Aul’s Uprising 55
Aul’s Uprising Aul’s Uprising 55
Aul’s Uprising Aul’s Uprising 55
Aul’s Uprising Aul’s Uprising 55

Aul, the Crystal King in an area of level 81 or higher without being hit by Crystalline Fissures

  • Location: The Azurite Mine (Area: Primeval Ruins)
  • Aul, the Crystal King
  • Crystalline fissures is a skill that the boss will thrust his sword forward, creating two snake-like Sunders that explode into crystals at the end of their destination. Note that if you fail the challenge, you can exit the delve by logging out so you only have to fight the boss again as long as you have enough sulphite to reach him, instead of having to find the boss again to attempt the challenge.

Complete Deadly Encounters in Style(3)

Defeat any three of the following endgame boss encounters in the specified ways.

Path of Exile Guides & Tips