2025-09-30 Live Patch 2.55.13.95213

Bug Fixes

  • Base
    • Chains of Kel'Thuzad [E]
      • Now reveal both targets on chain link connection.
  • Level 20
    • The Damned Return
      • Fixed an issue that caused the Shade to not be revealed when it deals damage.

2025-09-02 PTR Patch 2.55.13.94986

Bug Fixes

  • Base
    • Chains of Kel'Thuzad [E]
      • Now reveal both targets on chain link connection.
  • Level 20
    • The Damned Return
      • Fixed an issue that caused the Shade to not be revealed when it deals damage.

2025-07-29 Live Patch 2.55.12.94714

Bug Fixes

  • Base
    • Chains of Kel'Thuzad [E]
      • Fixed an issue that caused Barbed Chains' Armor reduction to apply to the Chain-link cast that granted the final stack of Blight.
      • Knockback will now happen as soon as the chains make a connection between two targets.

2025-07-01 PTR Patch 2.55.12.94564

Bug Fixes

  • Base
    • Chains of Kel'Thuzad [E]
      • Fixed an issue that caused Barbed Chain's Armor reduction to apply to the Chains Link cast that granted the final stack of Blight.
      • Knockback will now happen as soon as the chains make a connection between two targets.

2025-05-15 Live Patch 2.55.11.94189

Bug Fixes

  • Level 13
    • Chains of Ice
      • Chains of Ice no longer Slows if the Stun is removed.

2025-01-27 Live Patch 2.55.9.93565

Bug Fixes

  • Level 4
    • Phylactery of Kel'Thuzad
      • Announcements for Phylactery of Kel'Thuzad will now use team colors.

2024-10-14 Live Patch 2.55.7.93009

Bug Fixes

  • Base
    • Death and Decay [Q]
      • Fixed an issue that caused Death and Decay's cast effect to be visible in Fog of War and animate while Kel'Thuzad is Stopped.
  • Level 10
    • Frost Blast
      • No longer ignores vision limitations when queued.

2024-09-26 PTR Patch 2.55.7.92909

Updates

Talents

  • Level 10
    • Frost Blast
      • No longer ignores vision limitations when queued.

2024-08-12 Live Patch 2.55.6.92665

Bug Fixes

  • Fixed an issue that caused Defense Matrix to not reduce the damage of the Shade's Death and Decay.
  • Fixed an issue that caused the Shade's damage to not gain the benefits of Spell Leech.
  • Fixed an issue that caused the Shade's Death and Decay to still be fired if Kel'Thuzad's Death and Decay cast is interrupted.
  • Level 20
    • Deathchill
      • Now displays in the Death Recap.

2024-07-15 PTR Patch 2.55.6.92550

Bug Fixes

  • Fixed an issue that caused Defense Matrix to not reduce the damage of the Shade's Death and Decay.
  • Fixed an issue that caused the Shade's damage to not gain the benefits of Spell Leech.
  • Fixed an issue that caused the Shade's Death and Decay to still be fired if Kel'Thuzad's Death and Decay cast is interrupted.
  • Level 20
    • Deathchill
      • Now displays in the Death Recap.

2023-11-16 Live Patch 2.55.4.91368

Bug Fixes

  • Difficulty updated from Hard to Very Hard.
  • Fixed an issue that caused Deathchill's marker to remain on the target if they gain Unstoppable.
  • Fixed an issue that caused Power of Icecrown's active bonuses to be lost when slain.
  • Fixed an issue that caused Basic Attacks to activate Icy Grasp while Blinded or if the target is Evading.
  • Fixed an issue that caused Basic Attacks to activate Hungering Cold while Blinded or if the target is Evading.
  • Fixed an issue that caused the Chilling Touch Basic Attacks to be incapable of killing Sgt. Hammer's Spider Mines.
  • Kel'Thuzad can now attempt to cast Frost Nova over unpathable terrain.
  • Kel'Thuzad's abilities in the command bar will no longer flash when Kel'Thuzad gains 15 stacks of Master of the Cold Dark.

2023-10-23 PTR Patch 2.55.4.91227

Bug Fixes

  • Deathchill will no longer activate if the target loses Root or Slow by becoming Unstoppable.
  • Fixed an issue that caused Basic Attacks against Rooted Heroes to activate Icy Grasp.
  • Fixed an issue that caused Basic Attacks against Rooted targets to activate Hungering Cold.
  • Fixed an issue that caused Kel'Thuzad's buttons to light up when getting 15 baseline quest stacks.
  • Fixed an issue that caused Power of Icecrown's damage increase to be lost upon death.

2021-09-27 Live Patch 2.54.4.86223

Updates

Base

  • Vitals
    • Health increased from 1445 to 1490.
    • Health regeneration increased from 3.01 to 3.10.
  • Glacial Spike [1]
    • Damage increased from 60 to 70.

Talents

  • Level 7
    • Ice Cold [1]
      • Bonus cooldown reduction increased from 8 to 10 seconds.
  • Level 13
    • Icy Grasp [W]
      • Bonus cooldown reduction per Basic Attack increased from .5 to .75 seconds.
Developer Comment: Much akin to Kael'thas, we feel like Kel'Thuzad has been left out in the cold for too long. We are giving him some slight baseline buffs while also tuning up some underperforming talents.

2019-11-22 Live Patch 2.48.4.77406

Updates

Talents

  • Level 7
    • Chilling Touch [Passive]
      • Bonus damage reduced from 100% to 80%.
  • Level 10
    • Frost Blast [R1]
      • Starting missile speed increased by 60%.
  • Level 13
    • Icy Grasp [W]
      • Bonus Slow amount increased from 15% to 20%.
      • Cooldown reduction increased from .4 to .5 seconds.
Developer Comment: These changes should be fairly minor, and are just intended to better round out some of Kel'thuzad's talent tiers.

2019-09-24 Live Patch 2.48.0.76389

Bug Fixes

2019-09-16 PTR Patch 2.48.0.76268

Bug Fixes

2019-08-28 Live Patch 2.47.2.76003

Updates

Talents

  • Level 7
    • Accelerated Decay [Q]
      • Bonus damage increased from 20% to 25%.
      • Maximum stacks reduced from 6 to 4.
    • Ice Cold [Passive]
      • Cooldown reduction increased from 5 to 8 seconds.
      • Bonus damage increased from 300% to 400%.
  • Level 10
    • Frost Blast [R1]
      • Cooldown reduced from 60 to 50 seconds.
      • Mana cost reduced from 50 to 45.
      • Root duration increased from 1.75 to 2 seconds.
    • Shadow Fissure [R2]
      • Mana cost reduced from 45 to 40.
      • Damage reduced from 360 to 320.
      • New functionality: Damaging an enemy Hero with Shadow Fissure resets its cooldown.
  • Level 13
    • Icy Grasp [W]
      • Damaging enemy Heroes who are slowed by Frost Nova no longer increases its slow duration.
      • New functionality: Damaging enemy Heroes who are slowed by Frost Nova reduces the cooldown of Frost Nova by .4 seconds.
  • Level 20
    • Might of the Scourge [R2]
      • If an enemy Hero is hit by Shadow Fissure, then it will explode a second time below them 1 second later. This second cast will not duplicate itself.
Developer Comment: We're making some changes to Kel'Thuzad to reduce his burst damage combo with Shadow Fissure, as well as to make some adjustments to his talents to make them more competitive with one another.

2019-08-06 Live Patch 2.47.0.75589

Bug Fixes

  • Frost Blast will no longer apply their effects to Heroes in Time Stop.

2019-07-29 PTR Patch 2.47.0.75484

Bug Fixes

  • Frost Blast will no longer apply their effects to Heroes in Time Stop.

2018-12-11 Live Patch 2.41.0.70920

Bug Fixes

  • Added a quick-cast option for Glacial Spike.

2018-12-03 PTR Patch 2.41.0.70682

Bug Fixes

  • Added a quick-cast option for Glacial Spike.

2018-04-24 Live Patch 2.32.0.64455

Bug Fixes

  • Phylactery can no longer be activated before its animation completes.

2018-04-16 PTR Patch 2.32.0.64255

Bug Fixes

  • Phylactery can no longer be activated before its animation completes.

2018-03-27 Live Patch 2.31.0.63507

Bug Fixes

  • Chilling Touch can now correctly deal damage to Gall's Eye of Kilrogg.

2018-03-19 PTR Patch 2.31.0.63203

Bug Fixes

  • Chilling Touch can now correctly deal damage to Gall's Eye of Kilrogg.

2017-11-14 Live Patch 2.29.0.59657

Bug Fixes

  • Glacial Spike will now correctly deal bonus damage granted by Ability Power gains.
  • The Hungering Cold Talent will now correctly deal its bonus damage to non-Heroic enemies rooted by Frost Nova.

2017-11-06 PTR Patch 2.29.0.59279

Bug Fixes

  • Glacial Spike will now correctly deal bonus damage granted by Ability Power gains.
  • The Hungering Cold Talent will now correctly deal its bonus damage to non-Heroic enemies rooted by Frost Nova.

2017-10-17 Live Patch 2.28.3.58623

Bug Fixes

  • Shadow Fissure can now be cast on the minimap.
  • Shadow Fissure can now be cast between map levels on the Haunted Mines battleground.

2017-10-11 Live Patch 2.28.2.58482

Updates

Abilities

  • Frost Blast (R)
    • Cooldown reduced from 80 to 70 seconds
    • Mana cost reduced from 70 to 60

Talents

  • Level 4
    • Strip Shields (E)
      • Shield amount increased from 112 to 120
  • Level 13
    • Icy Grasp (W)
      • Increased slow duration from 1.5 to 2 seconds
    • Chain-Link (E)
      • Added functionality:
        • Also refunds the Mana cost of Chains Of Kel'Thuzad

Bug Fixes

  • Shadow Fissure can now be cast on the minimap.
  • Shadow Fissure can now be cast between map levels on the Haunted Mines battleground.

2017-10-09 PTR Patch 2.28.3.58344

Updates

Abilities

  • Frost Blast (R)
    • Cooldown reduced from 80 to 70 seconds
    • Mana cost reduced from 70 to 60

Talents

  • Level 4
    • Strip Shields (E)
      • Shield amount increased from 112 to 120
  • Level 13
    • Icy Grasp (W)
      • Increased slow duration from 1.5 to 2 seconds
    • Chain-Link (E)
      • Added functionality:
        • Also refunds the Mana cost of Chains Of Kel'Thuzad

Bug Fixes

  • Shadow Fissure can now be cast on the minimap.
  • Shadow Fissure can now be cast between map levels on the Haunted Mines battleground.

2017-09-20 Live Patch 2.27.5.57589

Updates

Abilities

  • Frost Nova (W)
    • Mana cost increased from 45 to 50
  • Chains of Kel'Thuzad (E)
    • Mana cost increased from 45 to 50
  • Frost Blast (R)
    • Cooldown reduced from 100 to 80 seconds
  • Shadow Fissure (R)
    • Damage reduced from 440 to 400
    • Cooldown increased from 15 to 20 seconds
    • Mana cost increased from 50 to 60

Talents

  • Level 4
    • Phylactery of Kel'Thuzad (Active)
      • Quest requirement increased from 10 to 12 Regen Globes
  • Level 7
    • Accelerated Decay (Q)
      • Bonus damage increased from 20 to 25%
    • Glacial Spike (Active)
      • Damage reduced from 220 to 60
      • Delay before the spike spawns increased from .5 to 1 seconds
  • Level 13
    • Chains of Ice (E)
      • Slow duration reduced from 1.25 to 1 second
      • Slow amount decreased from 70 to 60%
  • Level 16
    • Hungering Cold (W)
      • Bonus damage reduced from 60 to 55
Developer Comment: As expected, there is a fairly large discrepancy between Kel'Thuzad's performance across the entire game vs. players who are getting experienced with him at a higher level. His win-rate has climbed more than most of our other releases as players get used to his kit, so most of our changes are aimed at talent balance and toning his power down. While we like the sharpness of his power spike due to Master of the Cold Dark, we'll continue to keep an eye on his burst potential and his overall strength going forward.

2017-09-05 Live Patch 2.27.3.57062

Releases

Kel'Thuzad, Archlich of Naxxramas, has been added to the Nexus and is now available for play! Read on for a brief overview of his Abilities.

Trait

  • Master of the Cold Dark
    • Quest: Gain 1 Blight every time a Hero is Rooted by Frost Nova or hit by Chains of Kel'Thuzad.
    • Reward: After gaining 15 Blight, the cooldown of all Basic Abilities is reduced by 2 seconds.
    • Reward: After gaining 30 Blight, gain 75% Spell Power.

Basic Abilities

  • Death and Decay (Q)
    • After 0.5 seconds, launch an orb that explodes upon hitting an enemy, dealing damage to enemies in the area. The explosion leaves behind a pool of decay that lasts 2 seconds, dealing damage every 0.5 seconds to enemies.
  • Frost Nova (W)
    • Create a nova that explodes after 1 second, dealing damage to enemies inside and Slowing them by 35% for 2.5 seconds. Enemies in the center are Rooted for 1 second.
  • Chains of Kel'Thuzad (E)
    • Launch a chain, dealing damage to the first enemy Hero or Structure hit. For 4 seconds after hitting an enemy, Chains can be reactivated to launch to an additional enemy, pulling both enemies together and Stunning them for 0.5 seconds.

Heroic Abilities

  • Frost Blast (R)
    • Launch a meteor of ice at an enemy Hero. Upon impact, the meteor deals damage to its target and damages enemies in the area. All enemies hit by Frozen Tomb are Rooted for 1.5 seconds.
  • Shadow Fissure (R)
    • Create a fissure anywhere on the Battleground that explodes after 1.5 seconds, dealing damage to enemies in its area.

2017-08-28 PTR Patch 2.27.3.56859

Releases

Kel'Thuzad, Archlich of Naxxramas, has been added to the Nexus and is now available for play! Read on for a brief overview of his Abilities.

Trait

  • Master of the Cold Dark
    • Quest: Gain 1 Blight every time a Hero is Rooted by Frost Nova or hit by Chains of Kel'Thuzad.
    • Reward: After gaining 15 Blight, the cooldown of all Basic Abilities is reduced by 2 seconds.
    • Reward: After gaining 30 Blight, gain 75% Spell Power.

Basic Abilities

  • Death and Decay (Q)
    • After 0.5 seconds, launch an orb that explodes upon hitting an enemy, dealing damage to enemies in the area. The explosion leaves behind a pool of decay that lasts 2 seconds, dealing damage every 0.5 seconds to enemies.
  • Frost Nova (W)
    • Create a nova that explodes after 1 second, dealing damage to enemies inside and Slowing them by 35% for 2.5 seconds. Enemies in the center are Rooted for 1 second.
  • Chains of Kel'Thuzad (E)
    • Launch a chain, dealing damage to the first enemy Hero or Structure hit. For 4 seconds after hitting an enemy, Chains can be reactivated to launch to an additional enemy, pulling both enemies together and Stunning them for 0.5 seconds.

Heroic Abilities

  • Frost Blast (R)
    • Launch a meteor of ice at an enemy Hero. Upon impact, the meteor deals damage to its target and damages enemies in the area. All enemies hit by Frozen Tomb are Rooted for 1.5 seconds.
  • Shadow Fissure (R)
    • Create a fissure anywhere on the Battleground that explodes after 1.5 seconds, dealing damage to enemies in its area.
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