Goroth
All specs
* [Mythic] You can solo-soak Rain of Brimstone with Ice Block - save it for when no-one else can reach the spot in time. Watch out for overlapping patches, and soak them both.
Arcane
Fire
Frost
Demonic Inquisition
All specs
Arcane
* The cleave from Arcane Barrage will generate Torment during Bone Saw and Fel Squall.
* [Mythic] Arcane's burst AoE is useful to AoE the adds down after exiting the lantern.
Fire
* [Mythic] Dragon's Breath with Darckli's Dragonfire Diadem is useful to AoE the adds down after exiting the lantern.
* [Mythic] Use Flame Patch if you can keep the adds clumped up, or Unstable Magic if not.
Frost
* Frozen Orb and the cleave from Splitting Ice will generate Torment during Bone Saw and Fel Squall.
* Splitting Ice won't cleave if you face away from the second boss.
Harjatan
All specs
Arcane
Fire
* Try not to cast Meteor as adds are spawning, to avoid splitting damage.
Frost
* Try to time Frozen Orb casts for the murloc spawns, but don't delay it more than a few seconds, especially with 2-T20
Mistress Sassz'ine
All specs
* The Abyss Stalkers can be frozen with Frost Nova to activate Sephuz's Secret; the cooldowns line up perfectly.
* If you're in a bad spot or the raid has mistimed killing off Abyss Stalkers, you can Blink through the tornado wall.
* You can solo soak Hydra Shot with Ice Block. Keep in mind you still get stunned if you take multiple hits.
*[Mythic] Delicious Bufferfish only fall off once you take damage to your health pool. This means absorbed (Ice Barrier) and immuned (Ice Block) hits will not cause it to fall off. You can sit in Ice Block during Devouring Maw and not drop the fish.
Arcane
Fire
Frost
* Keeping high uptime on Blizzard and Frozen Orb allows for heavy boss damage in addition to high mobility. It is part of what makes Frost a great spec on this fight.
Sisters of the Moon
All specs
* [Normal/Heroic] You can solo-soak Incorporeal Shot with Ice Block.
* [Mythic] You can NOT solo-soak Incorporal Shot with Ice Block. Doing so will cause more damage to the raid than soaking it normally.
Arcane
Fire
* Be careful when casting Meteor - don't use it before a transition when the boss is about to despawn.
Frost
The Desolate Host
All specs
* You can Ice Block the Spear of Anguish; this will still push you through to the spirit realm, but without a debuff to be healed off, so you can immediately cross back to the corporeal realm. On Mythic you need to be below 50% health in order to cross realms.
Arcane
*
Fire
*
Frost
* Try to convince your raid to put you on the corporeal side, where adds tend to live longer - that means more Blizzard ticks and more Frozen Orb resets.
Maiden of Vigilance
All specs
* Use Shimmer to quickly reach the Maiden after she casts Blowback.
* Ice Block removes the unstable debuff, allowing you to skip a jump into the pit.
Arcane
* Blink before jumping into the pit and Displacement back up (AFTER blowing up) to save DPS time.
Fire
Frost
* With Glacial Spike: try to have five Icicles when you reach maximum stacks of Creator's Grace/Demon's Vigor, then fire a Spike.
Fallen Avatar
All specs
* Minimize use of Blink/Shimmer when you have Unbound Chaos; unpredictable movement can screw over other raid members. Alternatively, if you are standing in an unpopulated area; use it to keep higher DPS uptime.
* You can solo-soak Touch of Sargeras and Dark Mark with Ice Block. It's best to save Block to soak a Dark Mark late in phase two, as by this point raids often sacrifice the affected players. Ice Block means that that isn't necessary.
* Blink just before hitting the ground going into phase 2; this saves yourself around a million health in fall damage, and is faster than Slow Falling to the ground.
Arcane
* [Mythic] Use Greater Invisibility to lower the damage you take from Rupture Realities while having high stacks from soaking the Tainted Matrix.
Fire
Frost
Kil'jaeden
All specs
* You can solo-soak the large Armageddon Hail meteor with Ice Block.
* Blink/Shimmer shortly after the Rupturing Singularity lands (roughly when you reach the peak of your arch backwards) to return to the spot you were standing in.
* With Shimmer, you are one of the best option to kite the Flaming Orb.
* If you get Focused Dreadflame, Invisibility will force Kil'jaeden to stop casting it: the mechanic can be entirely skipped. This is easiest to accomplish as Arcane, but the other specs can do it, too.
Arcane
* You can kite for even longer than our other specs with good use of Displacement - but be careful of the Orb hitting other party members on its way back to you. Make sure that you can get to the Rift before it hits you!
* Your cooldowns line up exactly with the Shadow Reflection adds in phase 2, if you hold them a little: a big help with add control.
Fire
Frost
* Even though the boss's takes 99% reduced damage during transitions, casting Frostbolt will still reduce your cooldown on Icy Veins.