Cathedral of Eternal Night Mythic+ Guide
Instance Breakdown
Recommended Comp for high keys: You should bring at least two AoE stuns to Cathedral to ensure the trash goes smoothly.
Highest Tyrannical key done in time: 20
Highest Fortified key done in time: 21
Instance Timer: 35:00
Average # Mobs per pack: 2.9
Trash
Trash ERT Note
Copy and paste this into the Exorsus Raid Tools Notes section. You can share it with your group.
|cffffff00Cathedral Trash Path|r
Pull the Invader / Destroyed pack.
Pull the three pack to your RIGHT.
Run to the right and wait for the miniboss.
{cross}Dul’Zak{cross}
Pull the patrol with the lone Stalker.
SKIP the two Dreadwings by walking around inside of pillar.
Pull the four-pack patrol.
Pull the five demon pack.
Pull the Mistress pack half way up stairs
SKIP Vilebark Walker patrol by walking over flowerbed.
Clear Agronox’s room.
{skull}|cff8788eeAgronox|r{skull}
SKIP Vilebark Walker patrol by jumping over flowerbed.
Pull imps to the right only.
Clear Thrashbites room – Gazerax last
{skull}|cff8788eeThrashbite|r{skull}
Kill the imp / scavenger pack. Most will flee.
Pull Spiderlings on the right only.
Pull Enforcers and Orbcaster together.
{cross}Nal’asha{cross}
{skull}|cff8788eeDomatrax|r{skull}
Pull the Dreadwings
{skull}|cff8788eeMephistroth|r{skull}
|cffffff00Questionablyepic.com/mythic-plus|r
Bosses
Agronox
Two tree bosses in one expansion. Does the legion have an army of evil trees or something?
Dungeon Journal+
Poisonous Spores AoE Nature ✔Avoidance
Timber Smash Single Target Physical
Floral Fulmination (Fulminating Lasher) AoE Nature ✔Avoidance ✔Dodgeable
Choking Vines (random flower) Single Target Nature
Succulent Secretion (Succulent Lasher) AoE Nature ✔Dodgeable
You should know
- Argonox is a tightly tuned, flower-heavy encounter where all of the mechanics come in waves.
- Priority is: Run out of Choking Vines > Target Fulminating Lasher > Target Succelent Lasher > Target Boss.
- Fulminating Lasher’s spawn at the back of the room 20 seconds into the fight, and then a second time 40 seconds later. Five will spawn and they’ll fixate one party member each. These will explode if they reach their target and on high keys this is a one shot. Stun them, slow them, kite them. Do not let them touch you. Stack up to bring them together for more efficient AoE.
- There are only two waves of Fulminating Lasher’s. After you’ve cleared the two sets you’re done with them for the rest of the fight.
- At the same time, random flowers will pop up along the side of the room and grip random players in with thorny vines. You can break the vines by moving 20 yards away from the flower (make sure you don’t run into the Fulminating Lasher while doing so). Anyone afflicted will need urgent healing.
- Overlapping both of these mechanics is a third type of flower, the Succulent Lasher, which spawn in melee range roughly every 40 seconds. These AoE in an 8 yard circle around themselves and drop easy to avoid pools on the ground.
- [Tank, Healer] Timber Smash isn’t particularly special. It’s just a huge physical hit on the tank every 30 seconds and you’ll need a medium-large cooldown up for each of them. It does have a cast time so you’ll get a very brief second to pop something.
Thrashbite the Scornful
Oakheart’s evil twin, now Smashspites brother. What’s next? Ularogg’s roommate?
Dungeon Journal+
Pulverizing Cudgel AoE Physical ✔Avoidance Partially Dodgeable
Heavy Cudgel AoE Physical ✔Dodgeable
Scornful Charge AoE Physical ✔Dodgeable
Stifling Satire (Satirical Book) AoE Debuff (Magic, Silence)
Fettering Fiction (Fictional Book) AoE Debuff (Magic, Slow)
Beguiling Biography (Biographical Book) Single Target Debuff (Mind Control) Removed at 35% HP
Arcane Bolt (all three books) Single Target Arcane
You should know
- The types of books that spawn when each bookcase is broken are fixed:
- Northwest: Fictional Book + Satirical Book
- Northeast: Fictional Book + Satirical Book
- Southwest: Biographical Book + Satirical Book
- Southeast: Fictional Book + Satirical Book
- You can therefore avoid the Mindcontrolling Biographical book altogether by avoiding the Southwest bookcase.
- Pulverizing Cudgel and Heavy Cudgel are both pretty basic ‘don’t stand in this obviously bad thing’ mechanics and shouldn’t cause you much issue so long as you don’t tunnel-vision the boss.
- Scornful Charge will target a player and then five seconds later charge toward them, stopping when he hits a player or bookcase. Immunities are very effective against this ability since on higher keys you’re prone to running out of bookcases otherwise. You’ll also get no book spawns this way which lets you focus more damage on the boss. Use all of your immunities before you break a bookcase by having the player with the immunity step in the way of the charge.
- (Can abilities be interrupted?)
- The types of books that spawn when each bookcase is broken are fixed:
Domatrax
Don’tbeagenericfellord dontbeagenericfellord… dammit!
Dungeon Journal+
Chaotic Energy AoE Fire ✔Avoidance ✔Dodgeable (in Aegis)
Felsoul Cleave AoE Fire ✔Dodgeable
Frenzy Soft Enrage
Approaching Doom (Fel Portal Guardian) Summon
Searing Presence (Searing Overfiend) AoE Fire ✔Avoidance
Shadow Sweep (Hellblaze Mistress) AoE Shadow ✔Dodgeable
You should know
- [DPS] Target priority is Fel Portal Guardian > Searing Overfiend (hopefully none) > Hellblaze Mistress > Hellblaze Imp > Boss
- Chaotic Energy hits every 35 seconds and you’ll need to be within the Aegis of Aggramar to survive it. Try and move into the shield at the last second to preserve its energy and maximise your DPS. The tank can usually take the hit with the help of some cooldowns. You can expect it to hit for around 15 million raw damage on a 20 tyrannical. I’d strongly recommend they do so if they’re tanking any Hellblaze Mistresses since they can easily sweep your entire party out of the shield.
- Portal Guardians spawn at 90% and 50% health and killing them quickly is an absolute priority. If you don’t get them down within 20 seconds they’ll summon Searing Overfields which can quickly wipe your attempt.
Mephistroth
Where is Mal’Ganis anyway?
Dungeon Journal+
Phase 1
Dark Solitude AoE Shadow
Demonic Upheaval Ground Fire ✔Avoidance Partially Dodgeable
Carrion Swarm AoE Shadow
Phase 2
Creeping Shadows AoE Shadow ✔Avoidance
Shadow Blast (Shadow of Mephistroth) AoE Shadow ✔Dodgeable
Fel Blaze (Dreadwing) AoE Fire ✔Dodgeable
You should know
- Mephistroth is a heal-heavy fight with minimal mechanics for the DPS to contend with.
- Demonic Upheaval will target two players, and they should move toward opposite sides of the room to make the resulting circles easier to dodge.
- Players should be spread at least 7 yards apart so that each Dark Solitude missile only hits one person.
- In phase 2, DPS should coordinate which Shadow of Mephistroth to kill first since keeping their numbers to a minimum is essential.
- Anyone can control the Aegis of Aggramar. It doesn’t have to be a tank (and if a mobile ranged DPS or healer can take it then the tank can actually add some damage.
- [Healer] During Phase 2 you’ll be contending with Creeping Shadows with deals an increasing amount of damage throughout the phase. This is a throughput check for you, and your cooldowns are best used here.
- After your first visit to phase 2, Dreadwings will bombard the platform with Fel Blaze. This is dodgeable and you should do so.