Advisor Abilities

Thaladred the Darkener - the first advisor of four. This mob moves slower than run speed and must be kited.

• Gaze Ability: Person affected has aggro and must kite Thaladred.
• Knockback: Throws person into air dealing ~4-5k damage.

Lord Sanguinar - the second advisor of four. Has a large AoE fear.

• Fear: Will cast on a predictable timer, fearing everyone in range.

Grand Astromancer Capernian - the third advisor of four. A caster type mob with ranged attacks.

• Fireball: Cast on person with highest aggro consecutively.
• Conflagrate: Cast on raid, hitting multiple targets based on proximity.
• Arcane Explosion: Triggered by people or pets in melee range.

Master Engineer Telonicus - the fourth advisor of four. Uses bombs as main attack and debuffs random raid members with Remote Toy.

• Bomb: Thrown repeatedly, affecting targets within a frontal cone area.
• Remote Toy: 1 minute timer on debuff. Stuns for ~4 seconds per proc. Multiple procs during 1 minute duration. All hate is ignored while stun is active.

Advisor's Weapons

• [Cosmic Infuser]
• [Devastation]
• [Infinity Blade]
• [Netherstrand Longbow]
• [Phaseshift Bulwark]
• [Staff of Disintegration]
• [Warp Slicer]

Kael'thas Abilities

• Pyroblast: Casts 3 in a row during Kael's Shock Barrier. Tank can use [Phaseshift Bulwark] to mitigate a Pyroblast.
• Summon Phoenix: Phoenixes fly around and do AoE damage to players as well as themselves. Upon death, a phoenix will turn into an egg which will resurrect the phoenix if not killed within roughly 15 seconds.
• Flame Strike: Similar to Void Zones in that they deal significant damage when you stand in them.
• Shock Barrier: Shields Kael, preventing a set amount of damage and stopping players from interrupting Pyroblasts. Can be burned through to allow interrupts.
• Mind control: Typically casts on groups of two, casters, melee, and healers can get mind controlled. Can be broken with an attack from someone with an [Infinity Blade].
• Arcane Disruption: Disorients target for 10 seconds. [Staff of Disintegration] makes target immune to this effect.
• Gravity Lapse: All members of raid are teleported to Kael'thas and shot into the air, causing players to float and contol their characters similiar to swimming. At the end of this ability the raid will fall to the ground and take fall damage.
• Netherbeam: A chain lightning type attack used during Gravity Lapse. As it chains through people standing too close to one another, the damage dealt amplifies. Otherwise it will hit a single person and do minimal damage.
• Nether Vapor: Appears as small black clouds floating around in the air. If touched they add a stacking debuff that reduces your max health by 10% each time.

Information adapated from: WoWWiki - Kael'thas Sunstrider (tactics)