Revealed just moments ago at Gamescom thanks to community contributor, MFPallytime, we now have access to the full list of Kel'Thuzad's talents. From the looks of it, his entire kit is focused around gaining blight and utilizing the damage and CC bonuses it provides. Early impressions of Kel'Thuzad have already been positive, with many comparing him to The Butcher due to his extreme late game damage scaling.

Some of the talents that immediate demand attention is the talent "Phylactery of Kel'Thuzad"  that allows Kel'Thuzad to resurrect himself while also granting 10% life steal to all of his spell damage abilities. 10 globes seem easy enough to collect, especially if gives Kel'Thuzad the ability to negate costly late game deaths.

Another interesting talent is Glacial Spike. Granting Kel'Thuzad a new ability, Glacial Spike can be summoned to block enemy heroes and provides a stationary vehicle for Kel'Thuzad chain enemies too using his Chains of Kel'Thuzad ability. All of the level 7 talents seem very powerful, so expect this to be a touch choice for upcoming Kel'Thuzad players.

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 150 damage to enemies in the area. The explosion leaves behind a pool of decay that lasts 2 seconds, dealing 70 damage every 0.5 seconds to enemies.

Frost Nova (W)

Create a nova that explodes after 1 second, dealing 212 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 97 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 (R1)

Launch a meteor of ice at an enemy Hero. Upon impact, the meteor deals 100 damage to its target and 275 damage to enemies in the area. All enemies hit by Frozen Tomb are Rooted for 1.5 seconds.

Shadow Fissure (R2)

Create a fissure anywhere on the Battleground that explodes after 1.5 seconds, dealing 440 damage to enemy Heroes in its area.

 
Level 1

The Plaguelands

Increase Death and Decay's Duration by 1 second. After gaining 30 Blight, increase the radius of Death and Decay's pool by 30%.

Blighted Frost

Frost Nova deals 50% more damage to enemies in the center. After gaining 30 Blight, increase Frost Nova's Root duration by 0.5 seconds.

Barbed Chains

Increase Chains of Kel'Thuzad damage by 125%. After gaining 30 Blight, Chains of Kel'Thuzad reduces the armor of pulled Heroes by 15 for 4 seconds

Level 4

Strip Shields

Pulling a Hero with Chains of Kel'Thuzad grants Kel'Thuzad a permanent 246(at 20) shield, stacking up to 2 times. Additionally, Chains of Kel'Thuzad deals up to 442(at 20) bonus damage to Shields.


Phylactery of Kel'Thuzad

Quest: Collect 10 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

Armor of the Archlich

Activate to gain 50 Physical Armor for 4 seconds, upon activation, nearby enemies take 99(at 20) damage and are slowed 35% for 4 seconds, 25-second cooldown.

Level 7

Accelerated Decay

Each time a hero is hit by Death and Decay's pool, they take 20% more periodic damage from Death and Decay for the next 4 seconds, stacking up to 6 times.

Glacial Spike

Activate to create a spike that detonates after 4 seconds, dealing 360(at 20) damage to nearby enemies. The spike can be affected by Chains of Kel'Thuzad. 30 second cooldown

Chilling Touch

Every 8 seconds, Kel'Thuzad's basic attacks hit nearby enemies. Deals Spell damage instead of Physical and slows by 30% for 2 seconds.

Level 10

Frost Blast

Launch a meteor of ice at an enemy Hero. Upon impact, the meteor deals 168(at 21) damage to its target and 461(at 21) damage to enemies in the area. All enemies hit by Frost Blast are Rooted for 1.5 seconds. 100-second cooldown, 70 mana cost.

Shadow Fissure

Create a fissure anywhere on the Battleground that explodes after 1.5 seconds, dealing 738(at 21) damage to enemy Heroes in its area. 50 mana cost, 15-second cooldown.

Level 13

Icy Grasp

Increase Frost Nova slow duration by 1.5 seconds


Chains of Ice

After Chains of Kel'Thuzad stun expires, targets are slowed by 70% for 1.25 seconds

Chain-Link

Pulling two Heroes with Chains of Kel'Thuzad reduces its cooldown by 4 seconds

Level 16

Arcane Echoes

Hitting Heroes with Death and Decay reduces its cooldown by 1.25 seconds.

Hungering Cold

Enemies rooted by Frost Nova take an additional 103(at 22) damage each time they are damaged by Kel'Thuzad during the next 4 seconds.

Power of Icecrown

Stunning, Rooting or Slowing a hero grants 6% Spell Power for 10 seconds, stacking up to 5 times.

Level 20

Deathchill

When Frost Blast's Root expires, enemies are Slowed by 40% for 3 seconds. Heroes killed while under the effects of Frost Blast instantly release another Frost Blast Explosion

Might of the Scourge

Hitting an enemy hero with Shadow Fissure resets the cooldown.

Shifting Malice

Activate to Dash Forward, dealing 251(at 21) damage to enemies in the path.. Takedowns reset the Cooldown of Shifting Malice. 240 second cooldown

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.

What do you think of the talents? If you want to see the hero in action, check out MFPallytime's first impressions and analysis video below.