Chimaerus, the Undreamt God Raid Guide (The Dreamrift)

Overview

• Chimaerus is the only boss in The Dreamrift, a one-boss raid from Midnight Season 1. The fight is a single target encounter with constant add pressure: two halves of the raid take turns fighting in a hidden realm while the other half holds the boss.
• The single rule that decides the pull: no Manifestation may reach the boss. Every add it eats heals it and adds a stacking 100 percent damage buff, so a single leak can end the pull and several almost always do.
• Tanks: one holds Chimaerus at the edge of the room, the other drops down and holds the Colossal Horror. Healers: on Heroic and Mythic, dispel Consuming Miasma on top of puddles and ride out the raid damage. DPS: break add shields fast downstairs, then swap to anything that becomes targetable upstairs.

Chimaerus, the Undreamt God

Abilities

• Alndust Upheaval: a soak circle placed on the current tank. Everyone inside splits the damage, gets launched into the air and lands in the spirit realm below.
• Alnsight: the buff soakers receive, which lets them attack Manifestations for about 40 seconds.
• Rift Vulnerability: applied when Alnsight fades. It makes the next Upheaval hit you much harder for a minute and a half, which is why two soak groups must alternate.
• Rift Emergence: spawns the wave of Manifestations and puts a damage absorb on the whole raid (Rift Sickness).
• Alnshroud: the absorb shield on each Manifestation. Once the spirit group breaks it, the add crosses over to the normal realm and starts walking to the boss.
• Alndust Essence: every dead add leaves a puddle that slows by 50 percent and damages anyone standing in it.
• Insatiable: if an add reaches Chimaerus, it is devoured. The raid takes damage, the boss heals for twice the add's missing health and its damage done rises by 100 percent, and this stacks.
• Fearsome Cry: the Haunting Essence's fear on several players. It can be interrupted, and it is the cast to stop first.
• Essence Bolt: a single target damage cast from the same add. Interrupt it only with spare kicks.
• Consuming Miasma (Heroic and Mythic): a large circle on several players that ticks every 1.5 seconds for a minute unless dispelled. On dispel it removes any add puddle the circle overlaps and damages players close by.
• Caustic Phlegm: a 12 second raid-wide damage over time that hurts most when it overlaps other damage.
• Rending Tear: a frontal aimed at a random player that bleeds and knocks back everyone it hits.
• Corrupted Devastation: during the intermission the boss flies along a marked line, stunning and heavily damaging anyone in it, spawning adds and leaving puddles behind.
• Consume and Ravenous Dive (plain text, no link in our data): at 100 energy the boss eats every remaining add wherever it is and knocks the raid back into the intermission. Ravenous Dive ends the intermission the same way.

Phases

Phase 1. Split the raid into two equal teams, each with one tank, two healers and seven DPS. The first Upheaval comes soon after the pull: put the circle off to the side and have team A soak it together. Team A lands in the spirit realm, follows its tank to the Colossal Horror and opens on it, letting the smaller adds gather nearby so they die to cleave once their shields drop. Team B stays upstairs on the boss and turns on every add the moment it appears. When the next Upheaval comes, team B soaks while team A recovers from Rift Vulnerability. At 100 energy Chimaerus casts Consume, knocks everyone away and lifts off.

Intermission. The boss takes 99 percent reduced damage while airborne. Watch for the Corrupted Devastation lines, move out of them, kill the Manifestations that spawn, and on Heroic and Mythic keep clearing puddles with Miasma dispels. A simple habit is to drift left while facing the boss and come back to the middle after each spawn. Everything must be dead before Ravenous Dive lands, then Phase 1 starts again. Repeat until the kill.

Tank

• Upstairs tank: hold Chimaerus near the edge of the room, never in the middle, faced away from the raid and away from the path the adds take. Respect the Rending Tear knockback near the platform edge.
• Spirit realm tank: pick up the Colossal Horror where it spawns and let small adds come to you. Its hits grow the longer it lives, so plan defensives for the end of its life and keep the whole pack on the opposite side of the room from the boss.

Healer

• Dispel Miasma targets only after they have moved so their circle touches a puddle, and never in the middle of the group, because the removal splashes damage.
• Expect spikes on each Upheaval soak, Caustic Phlegm overlaps and the Consume knockback. Keep throughput cooldowns for the moments when a Miasma dispel and Phlegm line up.
• Haunting Essence fears can be dispelled if a kick is missed.

DPS

• Spirit realm: pool resources before the Upheaval. Hit the Colossal Horror first, then cleave the stacked shades. Assign several interrupters to Fearsome Cry on each Haunting Essence.
• Normal realm: start on the boss, but swap the instant an add becomes targetable. An add reaching Chimaerus costs far more than any boss damage you would gain.
• Rending Tear: if it is aimed at you, step away from the group so nobody else takes the bleed.

Difficulty notes

• Normal: there is no Consuming Miasma, and Ravenous Dive clears the add puddles at the end of each intermission.
• Heroic: Consuming Miasma is added, and Ravenous Dive stops clearing puddles, so Miasma dispels become the only way to clean the floor. Plan dispel spots.
• Mythic: two extra mechanics force a strict layout. Dissonance makes spirit realm players damage normal realm players within about 8 yards, so each team plays on its own half of the room with markers as a hard border. Rift Madness hits two spirit realm players (always one healer and one DPS); a normal realm player must soak each one to trade places, or the target is feared and dies. Do not pre-position the soakers, wait until the targets are lifted. There is an extra Upheaval right before the intermission, which then runs in both realms with Haunting Essences whose Fearsome Cry is much faster; a single missed kick can end the pull. Two Warlocks help a lot: one gateway per side lets each soak team skip the knockup, and a casting slow curse makes the Cry easier to kick (Method names Curse of Tongues, Icy Veins names Curse of the Satyr). Death Grips that pull Haunting Essences into the group also help. In Phase 1 on Mythic, Method advises fast Miasma dispels to keep people alive rather than perfect puddle clears. If the boss is low enough before the next Upheaval, send only the tank down and burn the boss before the following Consume.

Loot highlights

Items from this encounter's loot table in our journal data:

• Alnscorned Spire: an Agility staff.
• Undreamt God's Oozing Vestige: a Strength or Agility trinket for melee players.
• Gaze of the Alnseer: a Mastery trinket.
• Tome of Alnscorned Regret: an Intellect off-hand with Haste and Mastery for casters and healers.
• Greaves of the Unformed, Dream-Scorched Striders, Scornbane Waistguard and Scorn-Scarred Shul'ka's Belt: plate and cloth boots plus mail and leather belts.
• Alnforged Riftbloom, Alncast Riftbloom, Alncured Riftbloom and Alnwoven Riftbloom: class-group tokens, each usable by a fixed set of classes.
• Formula: Enchant Weapon - Worldsoul Cradle and Pattern: World Tender's Barkclasp: profession recipes.

Common mistakes

• Tanking Chimaerus in the middle of the room, so adds reach it before anyone can kill them.
• Spirit group spreading out and hitting small adds first, which releases them one at a time instead of as a stackable pack.
• Dispelling Miasma inside the raid instead of on a puddle at the edge of the group.
• The same team soaking two Upheavals in a row while Rift Vulnerability is still up.
• On Mythic, crossing the room border outside a Rift Madness swap and getting hit by Dissonance.
• Leaving a single Manifestation alive when Ravenous Dive or Consume goes off.

Mechanics checked against: icy-veins.com, method.gg, method.gg. Ability names and spell IDs come from TheWoWDB's own client datamine.