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Comment by Bananameister

He looks like a faceless in a crab-mascot costume...

Comment by WoWguides22

A quick guide on killing this boss: https://www.youtube.com/watch?v=giPx5A5RKG8&feature=youtu.be

Comment by Shaggypaw

Does anyone know a safe way down besides just jumping down at the start?

Comment by Earlinwe

If you jump down after resetting the boss (when he hasn't respawned yet), reaching the ground will kill you. It's not falling damage, you simply die.

As far as I know, the only way to pull him is to make sure the entire raid jumps down a second or so after the tanks.

Comment by bjg123

The debuff received from this boss is Annihilation. To track it more easily, use the following weakauras string:
d8JxgaqAqRNkvVuQs2fvkTncKllAMuu9BIMnPCmL6MeOoNufFJI00iHDkyVODRy)eGFkjggvY4KKoPuvdvOYGbsnCj1bLchfiPdtPJluvTqPILkvAXkXYb8qHYtvTms1ZLyIeqtLQMmfMo0fbQRkf1ZiOUojTrQWwfQkBwjTDcYhPsrFLkf(mj67uugPqvESqgnHA8sPlbK4wsrUgfX5jK)ce3Mk61svQ5MEEidBHvOx1e(cVUBn1TBx8o5n4nONhZwupojCq(yGdEWD5XSf3oKdEO7jd6MY3wzDTKiD0KIE6XLRQcs30QU03BDxCTjfk4fvzDTKidnTD1JBRQB6wrvfcBQj82jsSeiojCq(yGdEWD5JulO0PpBXMRnSyYRwByXK3gHq5uONVGwaKEI8WbI0tKFfoWIy6jsKhbGkvMaf6zytppcavQmbONhfvN8wvalFrDjfkh8QRRWwEqI14EqUVrxp)I666flnRYWxelnRY0icHcL8sZMkJMi2HpfkhKpEPvdfZRwsquhiYo8QLeKsDgbxHrGOoqKl8J1zwONHnFJzGIHAwekhI8L6utRVrHEI8Qde5R1SIsaE1jfkhK3QIsE1scIDPibweS0izh(I6skuoyCa5kSL)Xb2CZ5nYf11vVO6KpEn6kyhnBorE1bbGkvMa0tKiVncHcLEaOsLjGGLgjdnTDrKhZwu3HCqEhaq3faObvvRbGfTca0EpFVZSUrPoJWUwek5cFj1wJtchKpg4GhCxEmBXDm5Gw44mhKVF49fiyEmBXDCs4G8DQ49veC3(Uz888y2I6oKd6qZQSWxPzV59dG5fNqLIrgeKlEnP1GE(inBPqpFbok1sE3OrxZReRx8ov1qi98UrJUMxjwVyhIe5l1ze98f4OulzqN3PQgcPNbD2Hir(c09KEENQAiKEIejYdhmbgRw8LafOCyOhEmBr9yYbTWXzoiF)W7lqW8y2I6XKAsa6zyZWMbDg2mimdBguWWMipMT42HCqEhaq3faObvvRbGfTca0EpVbSuRzf1psomOqqcRxvNhZwCdESlAPb7WJzlUDih0HMvzHVsZEZ7haZdKkHYXlQo5HrYHpsQjbONHndBg0zyZGWmSzqbdBI8rsPMH0SXNTi4XUOLgSdpMTOUd5Gh6EYGUc(ccJ6TibQcyrOC4cVzqdumdcYfpMT4Mhuk8RawN5ralAzyZRutAgx4DxkDYGlERkk5cpMTOo4XUOLgCHhAW3ygOyOMfHYHhZwuNhuQ5TA1ITmS5TtKyjGdaRZ0lQo5FSUGbh4XSf3XKAsa6zythMO3tvHnr3ex6MwTAvDt5AtMOGbDg2mimdUyqbdBI8QqdEF8BOOH4OyUa3mpCekbkjx4nYIfvbSyYfEyKCyh(i5yarOCk0tKpsk1mKMnSdVDGoTiuo0ZxqlaspVHkGfHYbeuuDYxYi5yu4RbYsI8ls1jkfygzfXJIQt(rojrENw4qppkQo5h5K8gQawekhqqr1jFjJKJrHi)kCGfX0ZJIQt(rojVHkGfHYbeuuDYxYi5yuisKiVLE(gZafd1SiuomSfwHEvtiYledBf6BIKa

Comment by ezzek

There currently seems to be a bug with this fight concerning the Oblivion Spheres. You will get stuck in a Sphere and people will not be able to see you or knock you out. I've been affected by this twice as a Rogue where I've used Vanish and gotten hit by the Sphere while the Vanish buff is still on me. The boss (and your fellow raiders) will then constantly shift back and forth between friendly and hostile, but you will still not be able to get out. Whether or not you can get knocked out by an AoE effect like Ring of Peace or something by timing it just right, I don't know. I've seen someone reporting that the same thing can happen if you get a Sphere right after you use Ankh as a Shaman.

Comment by Aisenfaire

Hotfixes 11/15/18:

We've recently applied a couple of hotfixes to the Mythrax encounter: Oblivion Sphere now prioritizes ranged targets when possible, and the Existential Crisis achievement now functions as described.

Source: https://twitter.com/WarcraftDevs/status/1063263066735824898

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Mythrax the Unraveler

This NPC can be found in Uldir .

Uldir GuidesHalls of ContainmentTalocZek'voz, Herald of N'zothMOTHERCrimson DescentVectisZul, RebornFetid DevourerHeart of CorruptionMythrax the UnravelerG'huunMythrax the Unraveler, Bringer of Oblivion, Slayer of Sethraliss: with his mission complete, he returns to his master's side to await further instruction.Mythrax the UnravelerMythrax the Unraveler Strategy Guide

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Daily and Weekly Activities for PvE Players in Battle for Azeroth Mythrax the Unraveler Uldir Raid Strategy Guide Uldir Raid Gear and Azerite Armor Loot Guide

Heroic		Mythic
Deadly		Important
Tank		DPS
Healer		Interruptible
Magic		Curse
Poison		Disease
Enrage

Overview – Mythrax's abilities will trigger [Annihilation], reducing players' maximum health. When [Annihilation] triggers, there is a chance that an [Existence Fragment] will spawn, allowing the player or her allies to regain that previously lost maximum health.
On Mythic difficulty, [Obliteration Blast] and [Obliteration Beam] consume any [Existence Fragment] that they pass over. Also, when Xalzaix is thrown via [Living Weapon], he gains the ability to cast [Obliteration Blast].
- Tanks –
  Avoid taking damage from [Essence Shear] when you are already affected by [Essence Shear].
  Be mindful of your survivability as you gain stacks of [Annihilation].
- Healers –
  Move away from your allies when affected by [Imminent Ruin].
  Breaking multiple targets out of [Oblivion Sphere] will trigger heavy damage to all players.
  Avoid having multiple players charmed by the same [Oblivion Sphere].
- Damage Dealers –
  Move away from your allies when affected by [Imminent Ruin].
  Avoid having multiple players charmed by the same [Oblivion Sphere].
Annihilation – Reduces the target's maximum health by 1%. Inflicts 1 Shadow damage every 3 sec.
- Existence Fragment – Spawns an Existence Fragment near a player who recently gained a stack of Annihilation.
  Touching an Existence Fragment will consume the fragment and remove 2 stacks of Annihilation.
Stage One: Oblivion's Call
- Essence Shear – Inflicts 0 Shadow damage instantly, and applies Annihilation to players in a 15 yard cone in front of the caster.
  Players struck by Essence Shear will not generate new Existence Fragments when suffering stacks of Annihilation for 30 sec.
- Obliteration Blast – Fires an Obliteration Blast, inflicting 38 Shadow damage and applying Annihilation to players caught in the blast.
- Oblivion Sphere – Summons an Oblivion Sphere near an player. The Oblivion Sphere charms all players within 5 yards.
  While charmed, the sphere applies Annihilation every 2 sec.
  Players remain under the sphere's control until they are knocked out of the sphere's area of influence. Attacking players under the effects of Oblivion Sphere will knock them back slightly.
  When a player is freed, they trigger Crashing Oblivion.
  - Crashing Oblivion – Inflicts 12 Shadow damage to all players when a player is freed from an Oblivion Sphere.
- Imminent Ruin – 2 players are subjected to Imminent Ruin, suffering 6 Shadow damage every 2 sec for 12 sec.
  On expiration Imminent Ruin explodes, applying Annihilation to players within 12 yards. The explosion also inflicts 24 Shadow damage to all players. This damage is reduced the further away players are from the blast, up to a maximum of 30 yards.
  On Raid Finder difficulty, [Imminent Ruin] does damage to the entire raid without reducing damage taken based on distance from the initial target.
- Living Weapon – Mythrax commands Xalzaix to fly to a player's location, inflicting 35 Shadow damage to all players within 8 yards on arrival.
  Xalzaix will retreat when brought to 50% health.
  - Xalzaix
    Void Echoes – Inflicts 20 Shadow damage to all players. Each cast of Void Echoes increases subsequent casts by 50%.
    Obliteration Blast – Fires an Obliteration Blast, inflicting 38 Shadow damage and applying Annihilation to players caught in the blast.
- Essence Shatter – At 20% health remaining, Mythrax casts Essence Shatter, preventing all players from generating Existence Fragments when gaining stacks of Annihilation.
Stage Two: Ancient Awakening
- Xalzaix's Awakening – Mythrax channels his energy into Xalzaix, awakening his living weapon. The energy generated causes 2 Oblivion Spheres to form.
  When the channel completes, Xalzaix erupts, inflicting 25 Shadow damage and applying Annihilation to all players.
- Oblivion Veil – Reduces damage taken by Mythrax by 99%.
  
  Inflicts 25 Shadow damage every 3 sec to players who enter the Oblivion Veil.
- Obliteration Beam – Inflicts 12 Shadow damage and applies Annihilation every 0.3 sec.
  On Mythic difficulty, Mythrax focuses his [Obliteration Beam] himself and directs his fire at Xalzaix. When Xalzaix is struck by [Obliteration Beam], it unleashes its own smaller [Obliteration Beam].
- Visions of Madness – Summons Visions of Madness clones of up to 5 players.
  - Vision of Madness
    Mind Flay – Inflicts 8 Shadow damage every 1 sec and reduces movement speed by 50% for 3 sec.
- N'raqi Destroyer
  - Void Volley – Inflicts 24 Shadow damage to all players.
  - Critical Mass – Reduces incoming damage by 80% and increases damage inflicted by 80% while within 40 yards of another N'raqi Destroyer.
  - Essence Shear – Inflicts 0 Shadow damage instantly, and applies Annihilation to players in a 15 yard cone in front of the caster.
    Players struck by Essence Shear will not generate new Existence Fragments when suffering stacks of Annihilation for 30 sec.

Mythrax the Unraveler

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