•  Overview - Kel'Thuzad can only be truly defeated once his phylactery is destroyed. Until then, when Kel'Thuzad reaches 0 health remaining he calls forth his minions to protect him while the phylactery opens and empowers him. During this window, players may enter the phylactery and attempt to destroy the Remnant of Kel'Thuzad. Once fully recovered, Kel'Thuzad gains a stack of  Necrotic Surge and engages the players once more. When the Remnant is destroyed, the phylactery shatters and Kel'Thuzad summons a  Deep Freeze to unleash all his power before death can finally take him. |
| | • [NO DIFFICULTY]  Damage Dealers - Soul Shards continuously cast  Piercing Wail inflicting damage to the raid. Enemies alive at the end of Stage Two receive  Necrotic Empowerment. Kel'Thuzad cannot be defeated while the Remnant of Kel'Thuzad is alive. |
| | •  Healers -  Frost Blast roots players during moments when mobility is paramount.  Sinister Miasma continually stacks damage on players within the phylactery. |
| | •  Tanks - Each Soul Shard created applies  Soul Exhaustion to its summoner which cannot be removed until it is absorbed. Unstoppable Abominations inflict heavy damage. |
• Stage One: Chains and Ice
Kel'Thuzad is a master of frost and shadow and until the phylactery is destroyed, remains immortal. |
| | | • Soul Shard |
| | | • Glacial Spike - Once summoned, the Glacial Spike loses 5% health every 2 sec. Upon death the spike erupts, causing Frozen Destruction. |
| | | • [NO DIFFICULTY] Frostbound Devoted - These skeletal constructs move towards a random player and detonate if they reach them. |
| • Stage Two: The Phylactery Opens - When Kel'Thuzad is defeated, the phylactery opens and restores him to life once more. While open, players can enter the phylactery to battle the last remnant of Kel'Thuzad's soul. It is during this time Kel'Thuzad uses March of the Forsaken to summon his minions to protect his exposed phylactery. |
| | | • Unstoppable Abomination - The Unstoppable Abomination's unholy strength allows it to inflict punishing melee attacks. |
| | | • Soul Reaver - Soul Reaver's periodically unleash Banshee's Cry. |
| | • Remnant of Kel'Thuzad - At 60% and 20% health, the Remnant of Kel'Thuzad attempts to destroy anyone reamining within the phylactery with Undying Wrath and interrupts Kel'Thuzad's cast of Vengeful Destruction. |
| • Stage Three: The Final Stand - With the phylactery destroyed, true death awaits. Kel'Thuzad unleashes his full power to make his violent last stand. |
| | | • [NO DIFFICULTY] Unstoppable Abomination - The Unstoppable Abomination's unholy strength allows it to inflict punishing melee attacks. |
| | | • [NO DIFFICULTY] Soul Reaver - Soul Reaver's periodically unleash Banshee's Cry. |
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