Last Edited May 29, 2019
not sure on 20 yet
Increase Chains of Kel'Thuzad damage by 125%. After gaining 30 Blight, Chains of Kel'Thuzad reduces the armor of pulled Heroes by 10 for 4 seconds
Phylactery of Kel'Thuzad
Quest: Collect 12 Regeneration Globes to charge Kel'Thuzad's Phylactery. REWARD: Kel'Thuzad's Phylactery can be activated while dead to immediately respawn at the Hall of Storms, but must be charged again. PASSIVE: Kel'Thuzad heals for 10% of all Spell Damage dealt while the Phylactery is charged
or Armor of the Archlich
Reduce the cooldown of Glacial Spike by 8 seconds and increase its damage by 400%.
Create a fissure anywhere on the Battleground that explodes after 1.5 seconds, dealing 320 damage to enemy Heroes in its area. Damaging an enemy Hero with Shadow Fissure resets its cooldown.
Chains of Ice
After Chains of Kel'Thuzad stun expires, targets are slowed by 60% for 1 second.
Enemies rooted by Frost Nova take an additional 55 damage each time they are damaged by Kel'Thuzad.
The Damned Return
Activate to create a Shade of Naxxramas that lasts 15 seconds, which mimics Kel'Thuzad's casts of Death and Decay. 15 second cooldown.
Balance Patch - 8/8/17