I’m consolidating information from the Icy Veins raid guides here because I got tired of clicking on all of the bosses individually whenever I needed a reference. Also, the videos are updated to the live versions of FatBosses’ “bitesize” videos instead of the full length beta ones that Icy Veins has listed. Enjoy.
Nythendra is a simple and straightforward alternating two-phase fight, with very few abilities to worry about.
- Move away from others, towards the edges of the room, while afflicted with Volatile Rot.
- In Heroic mode, expect damage to ramp up at the end of Phase One, because of Infested stacking up.
- In Mythic mode, the stacks no longer reset in Phase Two, resulting in even more damage.
- Expect damage to ramp up as well at the end of Phase Two, because of the increasing damage of Burst of Corruption.
- When targeted by Rot, place your poison zones next to the edge of the room, preferably in a way that lines are drawn with poison zones from the edge to the boss. You should aim to leave 1/4 of the room free of poison zones, making for an easier Phase Two.
- In the last beta test, Rot was dealing its damage instantly, making it impossible to stack (especially on Mythic difficulty).
- Find a spot where there are no Infested Ground poison zones behind you. This way you will not have to move during Phase Two.
- Do not stand near insects during Heart of the Swarm.
- In Normal and Heroic modes, it is ok to get hit once or twice.
- In Mythic mode, damage taken from insects must absolutely be minimised. The encounter is not a DPS race, so it is ok to lose out on damage.
- When transitioning into Phase Two, find a place to plant, clear of Infested Ground, so that you can focus solely on boss damage or healing before the insects start dealing damage.
- In Mythic mode, make sure that everyone with over 10 stacks of Infested run into the melee group when Infested Mind is about to be cast. This will make it easy to DPS them down.
Ursoc is a quite straightfoward fight where his damage will ramp up over time. Your raid will have to deal with a handful of abilities in order to defeat him. Here is a preview of the fight from the Legion Alpha/Beta.
- Tank swap immediately after every cast of Overwhelm and Rend Flesh (explanations here).
- Heroic/Mythic — when Ursoc casts Roaring Cacophony move the boss away from the resulting Miasma void zone.
- Expect damage to ramp up throughout the fight.
- Be sure to have healing cooldowns for when Ursoc reaches 30% health and soft enrages.
- Mythic — Pool your resources to kill the Nightmare Image before the next cast of Roaring Cacophony.
- Stand in Ursoc’s path when he is preparing to charge for Focused Gaze to reduce incoming damage from Barreling Impact, unless already debuffed by Momentum. Basically, have two groups to soak the ability and take turns.
- When targeted by Focused Gaze move as far away from Ursoc as possible to reduce your damage taken from Trampling Slam and make sure there is a group of players between you and the boss. Walk in a straight line towards the middle of the room, to avoid confusing your fellow raiders (avoid strafing).
- Roaring Cacophony can be handled by just the tanks and melee players at the beginning, but its damage ramping up, you will need all players soaking by the end of the fight.
- Make sure to have cooldowns available for the Blood Frenzy part of the fight when Ursoc soft-enrages at 30% health.
- Heroic/Mythic — Ensure you do not stand in the Miasma void zones from the Nightmare Images.
- Heroic/Mythic — Roaring Cacophony‘s radius being quite large, make use of it. Move out of it immediately after the cast finishes, to avoid taking damage from Miasma.
- Mythic — Kill the Nightmare Image before the next cast of Roaring Cacophony.
The fight against the Dragons of Nightmare can seem daunting at first, because there are 4 dragons (Ysondre, Emeriss, Lethon, and Taerar), which have a shared health pool and several abilities (some shared, some not shared).
In reality, things are much simpler, because the raid only ever faces 2 dragons at a time, one of them being always Ysondre. Moreover, the raid needs to be split in two groups, each facing a single dragon. So most raid members are dealing with one Dragon at a time.
- Swap dragon with the other tank at 7 stacks of the Mark.
- Do not get Corrupted Breath cast at the raid.
- Pickup adds, except Dread Horrors (unless many spawn).
- Dispel everything! (root from Call Defiled Spirit, sleep from Seeping Fog, and Shadow Burst in Heroic mode).
- Save healing cooldowns for where the raid messes up and spawn extra adds or takes extra damage.
- DPS the bosses and any add that spawns, especially spirits from Siphon Spirit, which cannot be allowed to reach Lethon.
- Interrupt the casts of Corruption from Essences of Corruption.
- Stand on top of the flower from Nightmare Blast if no one else is, in order to prevent Dread Horrors from spawning.
Move away from all the ground effects. The only one that cannot be avoided is Call Defiled Spirit.
In Mythic mode, the fight feels the same as in Heroic mode, except for players entering portals to deal with the Lumbering Mindgorger.
Mythic-only: Lumbering Mindgorger
Make a small team of DPS players and 1 healer to deal with the Lumbering Mindgorger. They need to have good burst DPS and a short-cooldown interrupt.
Elerethe Renferal is a two phase fight, in which Elerethe will swap between two forms, the Spider and the Roc. This fight takes place on as many as three different platforms.
- During Spider form, take turns tanking Spiderlings to manage applications of Dripping Fangs.
- During Roc form, quickly taunt Elerethe after Raking Talons.
- During Roc form, pick up a Shimmering Feather to speed your way across platforms.
- Mythic: Keep Venomous Spiderlings away from the boss or they will grant her stacks of Swarm.
- Mythic: Tank the boss on a corner of the first platform before Feeding Time, to make it easier to handle the upcoming Tangled Webs.
- Mythic: Use immunities or tanking cooldowns to solo-tank Violent Winds on the second platform.
- During Spider form, heal allies connected by Web of Pain.
- During Roc form, beware of potential high damage during Gathering Clouds and Dark Storm.
- Pay special attention to players debuffed with Necrotic Venom who cannot stack with the raid during Gathering Clouds (they will be taking damage from both abilities).
- During Roc form, place Twisting Shadows away from the raid.
- Kill Venomous Spiderlings.
The fight against Il’gynoth consists in two Phases (One and Two) that repeat twice. In Phase One, you need to kill a stationary add called the Eye of Il’gynoth (by killing other adds next to it). Killing this add allows you to enter the chamber behind it where you can attack Il’gynoth for 50 seconds (this is Phase Two). If Il’gynoth is not dead after 50 seconds, then Phase One starts again and after successfully completing it, you get a second and last chance at finishing off Il’gynoth (if you do not manage, the raid wipes at the end of that second Phase Two).
- Tank Dominator Tentacles and watch out for the damage of Nightmarish Fury.
- Pick up the Nightmare Horror when it spawns and tank swap at 2+ stacks of Eye of Fate.
- When tanking the Nightmare Horror, make sure to move it when it creates a pool of Nightmare Corruption.
- When there is nothing to tank, assume the role of a DPS player.
- Dispel Touch of Corruption from raid members fixated by Nightmare Ichors.
- Beware of tank damage from Nightmarish Fury (Dominator Tentacles) and Eye of Fate (Nightmare Horror).
- Beware of massive AoE damage to raid members fixated by Nightmare Ichors if a large number of these adds are killed at the same time.
- Interrupt Mind Flay from Deathglare Tentacles. Decide on an interrupt rotation if necessary.
- Use the following kill priority for the adds:
- Deathglare Tentacles;
- Corruptor Tentacles (kill them with priority if Deathglare Tentacles are properly interrupted);
- Nightmare Ichors (kill them with priority if healers cannot keep up with the Touch of Corruption DoT they apply);
- Dominator Tentacles (kill it with priority in Heroic+ mode, if the damage increase from Nightmarish Fury becomes too hard to handle);
- Nightmare Horror.
- Phase One
- Phase Two
- Keep players outside to finish off Tentacles and Nightmare Ichors.
- Do as much damage as possible to Il’gynoth during Phase Two.
- Make sure to move away 11 yards from other players when targeted with Cursed Blood during Phase Two.
- Get out of the chamber before the 50 seconds are up (so before Dark Reconstitution finishes casting).
The fight against Cenarius has two Phases. During Phase One, you fight Cenarius and a number of adds that he regularly summons. Thanks for Malfurion, in every set of adds, you can cleanse one to fight for you and give you a beneficial buff. At the same time, you need to avoid a number of abilities and keep the stacks of a damaging debuff under control through various mechanics. Phase Two is a much more simple proposition where raid has to burn the boss before running out of place on the platform.
4.1. Boss Tank
- Phase One
- Boss Tank — Bring Cenarius to the add to be cleansed after a cast of Forces of Nightmare.
- Adds Tank — Pick up the adds and tank them (except for Corrupted Wisps).
- Ensure that Cenarius and the adds are tanked far away (at least 20 yards in Normal mode and 30 in Heroic mode), because of Aura of Dread Thorns.
- Phase Two
- Tank swap Cenarius after every Spear of Nightmares.
- Establish a cooldown rotation with the healers to reduce the damage of each Spear of Nightmares.
- Move Cenarius out of Spear of Nightmares void zones.
- Phase One
- Dispel Twisted Touch of Life from Twisted Sisters.
- If you can, dispel players rooted by Nightmare Brambles or players afflicted with Nightmare Javelin.
- Get used to damage patterns
- Phase Two
- Establish a cooldown rotation with the tanks to reduce the damage of each Spear of Nightmares.
- Phase One
- DPS the boss and switch to the adds when they appear. Kill priority:
- Corrupted Wisps;
- Twister Sister;
- Rotten Drake;
- Nightmare Ancient.
- Interrupt the Twister Sisters’ casts of Twisted Touch of Life.
- Hunters and Rogues can clear patches of Nightmare Brambles with Aspect of the Turtle and Cloak of Shadows.
- DPS the boss and switch to the adds when they appear. Kill priority:
- Phase Two
- Normal mode — Ignore Malfurion and burn the boss.
- Heroic mode — Burn the boss and free Malfurion when Entangling Nightmares is cast on him.
- Phase One
- Top Priority: move out of the raid when Scorned Touch is on you.
- Clear your stacks of Creeping Nightmares at 30 stacks in Normal mode and 25 stacks in Heroic mode.
- Spread out 8 yards for Destructive Nightmares (Corrupted Wisps).
- Spread out 4 yards for Nightmare Javelin (Twisted Sister).
- Leave as few people as possible between you and a Rotten Drake.
- When fixated on by Nightmare Brambles, kite them away from the raid and towards the edge.
- When under the effect of Unbound Touch or Unbound Essence clear patches of Nightmare Brambles.
- Phase Two
The fight against Xavius has three similar Phases, during which you need to kill adds and perform a number of usual tasks, all the while keeping your Corruption level low. Corruption is given to players by certain mechanics and needs to be managed carefully as a full Corruption bar means mind-control from the boss and death at the hands of fellow raid members.
- Alternate being debuffed with Darkening Soul (Phase One) and Blackening Soul (Phase Two and Three). Swap at 3 stacks and move out of the raid to get dispelled.
- Try and make it so that the tank in the dream picks up the Corruption Horror. Move it away from the raid, making it face away from the raid.
- Nightmare Infusion should be handled by the tank in the dream.
- Healers in the dream, preferably, need to dispel Darkening Soul (Phase One) and Blackening Soul (Phase Two / Phase Three) at 3 or more stacks.
- Beware of failed Corruption Meteors, Dark Ruination, and Nightmare Blades.
- DPS down Corruption Horrors (Phase One) and Inconceivable Horrors (Phase Two) as fast as possible.
- DPS in the dream (preferably) need to intercept Lurking Terrors (Phase One) and soak Tainted Dischargepools of corruption (Phase Two).
- Spread out 6 yards in Phase One for Lurking Eruption.
- Make sure that Nightmare Blades (Phase One and Three) is dropped in a safe location, typically in a line separating the melee and the ranged players.
- Move in to soak Corruption Meteor, unless your Corruption is much higher than the rest of the raid.
- When targeted by Bonds of Terror (Phase Two / Heroic mode), simply move close to the other targeted player.
- Avoid being hit by Corruption: Crushing Shadows when you are over 33 Corruption and Corruption: Unfathomable Reality when you are over 66.
- Do not ever get to 100 Corruption.
The fight against Odyn has 3 phases. Initially, you fight Hymdall and Hyrja, but they quickly withdraw to let the raid fight Odyn in the last 2 phases. Each phase has relatively few abilities and is designed to test your raid’s coordination. Odyn, Hymdall, and Hyrja retain some of their abilities from Halls of Valor, which makes learning the fight easy.
- Phase One: Tank Hymdall and Hyrja 35 yards away.
- Phase One (Hymdal’s Tank): move out for Horn of Valor.
- Phase Two: Swap Odyn at 6 to 8 stacks of Odyn’s Test.
- Phase Two (Heroic mode): Use cooldowns to survive when tanking Odyn while Hymdall or Hyrja is up.
- Phase Three: Move away from the boss when targeted by Stormforged Spear and make sure to pick up the boss when the other tank is targeted by this ability.
- Phase One and Two: Watch out for high Unerring Blast damage when the raid fails to kill all Runebearers.
- Phase One and Two: Watch out for extra damage from Shield of Light or Horn of Valor.
- Phase Two: Watch out for high Odyn’s tank damage when Hymdall or Hyrja is up.
- Phase Three: Beware of high Stormforged Spear damage.
- Phase Three: The longer the phase, the more damage Arcing Storm does.
- Phase One and Two: Kill the Runebearers once they are brought in their rune.
- Phase Two: Focus down Hymjall and Hyrja when they are up.
- Phase One: Spread out 8 yards.
- Phase One: Move in to soak the damage beam of Shield of Light.
- Phase One and Two: If a Runebearer fixates on you, bring him to his rune.
- Phase Two (Heroic mode)
- Spread out 5 yards when Hymdall is up.
- Spread out 8 yards when Hyrja is up.
- Move in to soak Shield of Light.
- Phase Two: Move out of Spear of Light‘s swirling ground effect and avoid subsequent Glowing Fragments.
- Phase Three: Do not set in Cleansing Flame.
- Phase Three: Move out when targeted by Storm of Justice.
- Quickly match the Valarjar Runebearers with their assigned runes and eliminate them. All players should immediately acquire a Protected buff by standing in their matching rune to avoid being one shot by Unerring Blast.
- Set a stack point to deal with Shield of Light.
- Avoid the greatly increased number of Spear of Lights and Glowing Fragments.
- Set new World Markers each time Cleansing Flame is cast. Stack at the marker matching your Runic Brand to avoid killing the raid with Radiant Smite.
The fight against Guarm has a single phase during which positioning is key. The fight is meant to be a DPS check in Mythic mode (with a 4-minute enrage timer), but the Normal and Heroic versions of the fight are more lenient with a 5-minute enrage timer.
- Tank the boss facing the ranged group.
- The off-tank will not actively tank but help soak Multi-Headed‘s damage.
- Pick up the boss again after Roaring Leap and Headlong Charge.
- Remove the healing absorption effect from Shadow Lick.
- Dispel the freeze/stun effect from Frost Lick (for mass dispels, ask a Shadow Priest for help).
- Heal through the DoT effect of Flame Lick.
- Pay attention to Flashing Fangs damage on the tanks.
- Shadow Priest can help with mass-dispelling Frost Lick when it hits several players.
- Move in the damage area (Shadow, Frost, Fire) you were assigned to when Guardian’s Breath is cast and do not ever stand the other two.
Regarding the timing of abilities, there are two things to note.
- A Lick (either Shadow Lick, Frost Lick, or Flame Lick) is always cast before a Guardian’s Breath, so while players move in to stand in the proper breath, they still need to maintain a 5-yard distance.
- Headlong Charge is always cast a few seconds after a Roaring Leap, so it is important for players to be aware of this and reposition following a Roaring Leap with the next Headlong Charge in mind.
Most of the damage in the fight is avoidable, so most of the healing concerns are about healing avoidable damage that was not avoided and the tank damage from melee attacks and Flashing Fangs.
Special care needs to be given to Licks.
- The healing absorption effect from Shadow Lick needs to be cancelled by healing the affected players.
- The freeze/stun effect from Frost Lick needs to be dispelled (for mass dispels, ask a Shadow Priest for help).
- The DoT effect from Flame Lick needs to be healed through.
3 healers with separate Guardian’s Breath debuffs must be assigned to carry the Volatile Foam debuffs. World Markers should be placed where players can take the Volatile Foam and call for a dispel, successfully transferring it to the assigned healer.
We advise you to use Bloodlust/ Heroism/ Time Warp at the pull. There will be a Guardian’s Breath 15 seconds afterwards, but it is the first one, so people do not have yet to stand in a specific breath, resulting in it being the easiest Guardian’s Breath to handle. There will be a Headlong Charge towards the end of the effect, but it still remains the best time to cast Bloodlust/Heroism/Time Warp.
The fight against Helya has three distinct phases that test a variety of different skill checks. The fight starts as a control encounter with several mechanics that rely on raid organization to proceed. However, as your group gets further into the fight, it evolves to become a frantic race to the finish as both the intensity and raid damage mount to a fever pitch.
- Tanks face the boss slightly off to the side to avoid hitting the raid with breath cone, but not so far as to spawn adds on the upper levels.
- The tanks swap after every breath.
- The Helya tank will always get Taint of the Sea while the offtank will always get a Orb of Corruption.
- The Grimelord and the Night Watch Mariner should be tanked separately. They should be kept near Gripping Tentacles for passive cleave.
- One tank should always stay in range of the boss no matter what to avoid Corrosive Nova.
- Plan cooldowns appropriately for Anchor Slam and Ghostly Rage.
- Dispel Taint of the Sea.
- Plan cooldowns appropriately for Bilewater Liquefaction and Fury of the Maw.
- Heal players who have soaked Corrupted Axions recently to break the healing absorb.
- Avoid getting hit by Helya’s breaths if you are not the current tank.
- If you are fixated by Rabid, bring the Decaying Minion into the designated stack point.
- Avoid being hit by Orb of Corruption and Orb of Corrosion, and ensure they are kited correctly.
Most of the mechanics are similar to their lower difficulty counterparts, but the positioning and strategy are notably different on a few counts:
- Stack points for Taint of the Sea and Orb of Corruption should be set to reduce movement and avoid Corrupted Slicers.
- The Bilewater Slimes must be dealt with effectively as the damage is much higher on Mythic.
- Quickly deal with the Helarjar Mistcallers before they can get off more than a single cast of Mist Infusion.
- Avoid spreading Fetid Rot as it now pulses on each tick.
- Be wary of the increased Give No Quarter zones to dodge.
- Use the same stack point for Orb of Corrosion as was used for Orb of Corruption to deal with the Corrupted Slicers and Decay patches.
- Assign players to soak Corrupted Axions in Phase Three and ensure the healing debuff is healed immediately to avoid these players becoming Corrupted.
6. Bloodlust/Heroism/Time Warp
We advise you to use Bloodlust/ Heroism/ Time Warp during the final Phase. The first two phases of the fight are about control, while the final Phase is a race to the finish to kill the boss before the raid damage is too high from Fury of the Maw. Bloodlust/ Heroism/ Time Warp can also be an invaluable healing cooldown in this Phase.