PoE Defeat Aul, the Crystal King after destroying all of the Crystalline Cocoons

ul, the Crystal King, is a formidable boss in Path of Exile, known as the last king of the Proto-Vaal civilization. He can be encountered in the depths of the Azurite Mine, specifically within The Crystal King’s Throne nodes of the Primeval Ruins biome. This guide will help you defeat Aul after destroying all of the Crystalline Cocoons, a challenging task that requires strategy and preparation.

Contents

  1. Background
  2. Mechanics and Abilities
  3. Strategy for Destroying Crystalline Cocoons
  4. Defeating Aul, the Crystal King
  5. Conclusion

Background

Aul, the Crystal King, resides in the Primeval Citadel, found at a depth of 130 or greater in the Azurite Mine. Encountering him is no small feat, as his arena and mechanics are designed to test even the most skilled players.

Key Details:

  • Level(s): 83
  • Location(s): The Crystal King’s Throne
  • Resistances:
    • Fire: 50%
    • Cold: 50%
    • Lightning: 50%
    • Chaos: 30%
  • Modifiers:
    • Cannot Be Fully Slowed
    • Immune to stun while stunned (hidden)
    • Immune to stun while previous stun ended recently (hidden)

Mechanics and Abilities

General Abilities:

Aul employs a variety of deadly skills throughout the fight:

  • Default Attack: A close-ranged melee slash attack converting 75% of physical damage to cold damage.
  • Spectral Shield Charge: Aul shields himself, becoming untargetable, and launches spectral Shield Charge proxies that leave damaging crystal trails.
  • Crystalline Arc: Encases his weapon with crystals before performing a Cleave attack that launches ice crystals.
  • Crystal Nova: Charges his sword and plunges it into the ground, causing crystal spikes to emerge.
  • Crystalline Fissure: Thrusts his sword forward, creating crystal fissures that explode into giant crystal spikes.
  • Whirling Blades: Performs a Whirling Blades attack if not within melee range.
  • Crystalline Barrage / Bullet Hell: If more than four Crystalline Cocoons are broken, Aul fires a continuous barrage of Ice Spears.
  • Darkness Phase: At 50% health, the arena goes dark, and Delve monsters emerge from the darkness.

Strategy for Destroying Crystalline Cocoons

Crystalline Cocoons are located at the edges of Aul’s arena. Destroying them adds another layer of complexity to the fight, as broken Cocoons will spawn Azurite monsters and leave pools of cold damage over time.

Key Tips:

  1. Use Blink Skills:
    • Travel Between Gaps: Use blink skills such as Flame Dash or Blink Arrow to navigate between the gaps of Crystalline Cocoons.
  2. Manage Cooldowns:
    • Dodge Attacks: Time your movement skills to dodge Aul’s attacks and avoid the pools of cold damage.
  3. Throw Dynamite:
    • Interrupt Attacks: Dynamite can be used to interrupt Aul’s powerful abilities, such as Crystal Nova and Crystalline Barrage.
  4. Prepare for Adds:
    • Deal with Azurite Monsters: Be ready to quickly deal with Azurite monsters that spawn from the destroyed Cocoons.

Defeating Aul, the Crystal King

Once all Crystalline Cocoons are destroyed, the fight with Aul becomes significantly more challenging. His Crystalline Barrage attack, which triggers when more than four Cocoons are broken, becomes a critical threat.

Key Tips:

  1. Positioning:
    • Stay Mobile: Constantly move to avoid Aul’s barrage of Ice Spears and other attacks.
    • Use Safe Zones: Identify and stay in safe zones to avoid the pools of cold damage.
  2. Defensive Measures:
    • Cold and Physical Damage Mitigation: Use a Sapphire Flask, Purity of Ice, and Determination to reduce incoming damage.
    • Movement Speed: Utilize a Quicksilver Flask and movement skills to maintain high mobility.
  3. High Evasion and Block:
    • Avoid Attacks: High evasion and attack block can greatly reduce the effectiveness of Aul’s attacks.
  4. Darkness Phase:
    • Use Flares: During the darkness phase, use flares to prevent darkness damage and follow the moving blue crystals.

Conclusion

Defeating Aul, the Crystal King, after destroying all of the Crystalline Cocoons is a testament to your skill and preparation in Path of Exile. By understanding his mechanics, staying mobile, and effectively managing the added threats from the destroyed Cocoons, you can conquer this challenging encounter and emerge victorious. Good luck, Exile!

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