The Court of Seregost — Full Instance Guide

A complete walkthrough of The Court of Seregost, set inside the keep of Seregost. This instance features tight corridors, medium-sized rooms of mobs, and three of Lhaereth's lieutenants guarding the way to her spire. Players are accompanied by Rhadrog and Faeron, though they do not fight until the final encounter.

Instance Loot Reference

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DPS Stats for Level 115

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Phase One: The Morroval Twins

Trash Pulls

The first trash pull consists of 3 Superior Uruk Guards — two flanking the entry corridor and one patrolling further down. These Uruks can call nearby enemies to aid them, so pull carefully.

Past them, the first boss zone opens up. All trash must be cleared before the bosses appear:

• Left room: 3 Uruk Guards + 4 stealthed Morvul Shadows
• Right room: 1 Uruk Guard + multiple Black Númenóreans and Morroval Hostesses (can be range-pulled in groups)

Boss: The Morroval Twins

A dual boss fight against Gorkasak, Captain of the Guard and Kulgrú, Mistress of the Household.

Once all trash is cleared, the twin brother-sister pair appear and speak — they will not attack until provoked. Gorkasak spawns in the left room; Kulgrú spawns in the right room behind the banister.

Home Room Mechanic

The central mechanic of this fight:

• Each sibling has a "home" room (the room they spawned in)
• While in their home room, they gain a stacking buff every 10 seconds (up to 10 stacks) that increases outgoing damage and decreases incoming damage
• At maximum stacks (10), the sibling absorbs all damage — completely immune
• The buff takes 30 seconds to wear off once the sibling is moved out of their home room
• At higher difficulties, both siblings must be taken into the opposite rooms, either periodically or permanently

Other Mechanics

• Gorkasak inflicts a heavy, non-removable bleed and hits harder in melee than Kulgrú
• The siblings will occasionally close the gates between the two rooms for about 30 seconds. Players cannot bypass the gates and must wait it out if caught on the wrong side
• The fight resets if a defeated player retreats and tries to open the door to re-enter. Unlike most boss fights, this door does not lock

Recommended Strategy

1. Healer aggros Gorkasak and kites him around the banister in the right room (his non-home room, preventing buff stacks)
2. Tank and DPS kite and defeat Kulgrú in the left room (her non-home room)
3. Once Kulgrú is down, everyone moves to the right room to finish Gorkasak

When both twins are defeated, their rewards chest spawns in the central chamber and the door forward opens.

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Phase Two: The Fallen Warden

Trash Pulls

The corridor opens into a large atrium with a large number of Lhaereth's devoted. All must be defeated to activate the second boss:

• 7 Merrevail (2 are stealthed) along the room edges
• 6 Black Númenóreans in the centre with an Uruk patrolling among them
• 4 Uruks guarding the gates at the far end

All mobs can be pulled in small groups — only enemies in a short vicinity will aggro.

Boss: Dulgabêth the Broken

After the events of Chapter 4 of the Black Book, Dulgabêth is now a shell of his former self, barely holding together in physical form. Lhaereth calls him to her defence as she retreats further into the spire.

Key Mechanics

Bursting Boils (every ~30 seconds):

• Hits all players for extremely high tactical damage
• At T2 difficulty, maxed tactical mitigation is necessary, with lighter classes potentially needing extra morale essences to survive
• Drops a poison cloud centred on each player dealing moderate damage over time
• The cloud DoT does not stack — but surviving the initial burst is the real challenge

Tip: Spread out slightly before Bursting Boils to avoid overlapping poison clouds, but not so far that healers can't reach everyone.

Beyond the burst damage, this is a basic tank-and-spank encounter. Keep healing up and burn the boss.

When Dulgabêth falls, his chest appears below the throne and two doors open behind it leading deeper into the instance.

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Phase Three: The Plague Chambers

The Bat Cavern

A cavernous hallway introduces the Plagued Great Bats — a new enemy type that plays a major role from here on:

• Bats inflict a heavy-damage removable disease debuff with melee attacks (upwards of 12,000 damage per tick)
• If not removed, the disease becomes an unremovable 2-minute debuff to primary stats
• Bats drop a plague cloud identical to Dulgabêth's when defeated
• 4 bats occupy this cavern before the Plague Chambers doorway

Priority: Cleanse the disease debuff immediately. The tick damage is extreme and the permanent stat debuff cripples your effectiveness.

The Testing Chamber

This room is filled with Goblin Assistants and a couple of Uruk Guards. The left wall has three jail cells holding goblins, orcs, and trolls undergoing plague testing — levers open the cells and the surviving occupants will attack.

Shortcut: All mobs in this room can be bypassed by hugging the left wall until the gate to Zhólug. The one frantically running goblin assistant can be avoided with good timing.

Mini-Boss: Zhólug

A large troll guarding the far gate of the Plague Chambers.

• Drops plague clouds periodically (same as Dulgabêth)
• Always opens with a ranged stone-throw stun — whoever grabs aggro first should be prepared
• Otherwise a simple fight

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Phase Four: The Spire of Seregost

The Rampway

Past Zhólug is the final spiral ramp leading up to Lhaereth. Plagued Great Bats stream down the tower in waves of 3 — the beginnings of a swarm meant to carry plague across Middle-earth.

• These bats have an extremely small aggro radius
• Players can hug the outer wall to avoid engaging them entirely
• No need to fight them unless they aggro accidentally

Final Boss: Lhaereth the Stained

At the top of Seregost, Lhaereth's plan is revealed: four cauldrons of plague-ridden liquid. Bats carry traces from these cauldrons off the tower and into Gondor.

The goal is not to defeat Lhaereth — it is to destroy all four Plague Cauldrons.

How the Fight Works

• Each cauldron has a morale bar and spawns morroval guards when destroyed
• Plagued Great Bats slowly fly up to each surviving cauldron, hover for ~15 seconds, then fly off with a payload of plague
• The tank must aggro bats off the cauldrons ASAP — allowing too many bats to escape automatically fails the encounter
• Faeron and Rhadrog engage Lhaereth directly, freeing players to focus on cauldrons
• Lhaereth initially picks a random nearby target (may be a player), but will turn to the Rangers once they hit her — don't build threat against Lhaereth early

T1 Strategy

1. Tank aggros and kites all spawning mobs (bats + merrevail)
2. DPS burns the cauldrons — ideally destroy all four in quick succession to minimise merrevail pressure (most despawn once all cauldrons are down)
3. Watch for plague clouds and cleanse poison debuffs immediately, especially on the tank
4. Once all four cauldrons are destroyed, most mobs despawn, Lhaereth's chest appears, and she delivers her final speech before flying out

Longer Fights (T2 / Challenge)

• In extended fights, the two Rangers cannot withstand Lhaereth indefinitely — the tank will need to eventually aggro and kite Lhaereth as well as the other mobs
• The kiting tank must manage bats, merrevail, and Lhaereth simultaneously

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T2 Challenge: Khílnat, the Silent Shade

To complete the T2 Challenge, the matron of the bats must be defeated to ensure the plagued bats never again threaten Middle-earth.

How Khílnat Appears

Lhaereth calls in Khílnat after 6 Plagued Great Bats have been defeated.

Khílnat's Mechanics

• Employs a very long 30-second stun on her target
• This stun is easily lethal for a tank dragging bats, merrevail, and potentially Lhaereth — it must be broken out of immediately
• Combined with the extended fight duration, the tank must stay constantly alert for stuns and poison debuffs

Challenge Strategy

1. Kill bats as they come — after the 6th bat dies, Khílnat spawns
2. Tank must maintain aggro while kiting everything (bats, merrevail, Lhaereth if Rangers are struggling)
3. Tank: break the 30-second stun immediately every time — use stun immunity skills, pots, or have support classes ready to break it
4. Cleanse poison debuffs as a top priority on the tank
5. DPS should focus Khílnat as soon as the tank has stable aggro — burn her as fast as possible
6. Once Khílnat is down, destroy all four cauldrons quickly before the group is overwhelmed
7. Two reward chests spawn (instead of one) when all cauldrons are destroyed

Key to success: The tank's survival is everything in this fight. Kiting is the only viable option — standing still with this many mobs is not sustainable. DPS must burn Khílnat fast to shorten the danger window.

Recommended Consumables

Seregost features heavy poison/disease pressure from Plagued Bats and Dulgabêrth’s Bursting Boils. Tactical mitigation and cleanse ability are paramount.

Consumable	Example	Purpose
Cooked Food	Superior Doomfold Rations	Primary stat food for your class
Trail Food	Doomfold Trail Provisions	Trail food — mitigation buffs
Battle Scroll	Scroll of Doomfold Battle Lore	Offensive mastery buff
Warding Scroll	Scroll of Doomfold Warding Lore	Defensive mitigation — critical for tanks and ESG off-tanks
Hope Token	Doomfold Edhelharn Token	Hope buff — counters Abyssal Darkness dread from Deathless Watchers
Athelas Essence	Supreme Doomfold Athelas Essence	Emergency morale after Bursting Boils or Blood Sickness
Celebrant Salve	Supreme Doomfold Celebrant Salve	Power sustain — essential during long corruption removal phases
Enhancement Rune	Enhancement Rune, Lvl 116	Extra LI item levels for DPS and healing output
Shield-spikes	Doomfold Shield-spike Kit	Shield-spike for tanks (match damage type to content)

Read my guide for information about Light of Eärendil if you are playing the instance on level 115.

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Guide by Robrelloth, based on information from lotro-wiki.com. Formatted for lotroguides.com.