The Shadowlands are the lands beyond the mortal realm of Azeroth, where the souls of the dead travel to upon passing. The Arbiter, a being of great power, once guided these souls to one of many different afterlives. Now, all souls are being sent to the Maw, a place of eternal torment. The denizens of the Shadowlands, from the peaceful Kyrians of Bastion and the Night Fae of Ardenweald to the cunning Venthyr of Revendreth and warlike Necrolords of Maldraxxus, must now come together to stem the flow of souls.

Boss icon Valinor.png Valinor, the Light of Eons
Built by the Kyrians as a means of testing their most hardened warriors, Valinor is a centurion of great power. Taken by the forsworn and infected with the seeds of doubt, Valinor now sees all foes as challengers.
Boss icon Mortanis.png Mortanis
One of the most studied necromancers of the House of Rituals, Mortanis has been working tirelessly on a means of transforming himself into a more powerful form. Now, he is only a few moments from succeeding.
Boss icon Oranomonos.png Oranomonos the Everbranching
Once the eldest guardian of Tirna Scithe, Oranomonos has wilted alongside the great tree. With very little anima left, she can no longer discern friend from foe, as the gorm gorge themselves on her decaying form.
Boss icon NurgashMuckformed.png Nurgash Muckformed
Formed from the sludgy mass of many dripping dredgers, and empowered with dark magics by Denathrius' most elite sorcerers, Nurgash is not the most intelligent minion, but his fists can crush castles.
Boss icon Mawsworn Caster.png Mor'geth, Tormentor of the Damned
Among the countless minions of the Jailer, few relish their twisted work as intently as the vile Mor'geth. Obsessed with breaking the will of any soul unfortunate enough to fall into his grasp, Mor'geth maintains an iron grip upon the battlefield, ensuring that any misstep will be his opponent's last.
File:Boss icon Antros.png Antros
Antros serves as the guardian to the treasures of Antecedent Isle. The Jailer's forces seek to use it in its' newly dominated form to unearth the isle's secrets to further desecrate Zereth Mortis.

Castle Nathria

Sire Denathrius revealed his plot to send anima into the maw and crushed the rebels that opposed him. Now, Prince Renethaul gathers his few remaining allies for a desperate mission to infiltrate Castle Nathria and remove Sire Denathrius from power once and for all.

Boss icon Shriekwing.png Shriekwing
Tasked with guarding the great hall of Sire Denathrius, the blind Shriekwing locates her prey with sound and smell. The last sound heard by trespassers in Castle Nathria's halls is the monster's shriek as she descends on her prey.
Boss icon HuntsmanAltimor.png Huntsman Altimor
Sire Denathrius seldom engages in the hunts himself, but Altimor makes certain the master has the finest beasts should he ever choose to indulge. Margore, Barghast, and Hecutis has been trained longer than most beasts have existed, and each is ready to deliver the Huntsman's wrath to any in his domain.
Boss icon SunKingsSalvation.png Sun King's Salvation
Among the more sinister crimes of Castle Nathria, souls are being tortured not to redeem theirs sins, but to amplify them. The prideful Prince Kael'thas has been burdened with the sins of others, and his pain and hatred are channeled to make him a powerful weapon. This has imperiled his soul like no other and it must be saved if only to keep it from being used against the Shadowlands.
Boss icon ArtificerXymox.png Artificer Xy'mox
Not everyone in Castle Nathria is loyal to Sire Denathrius. Some simply saw an opportunity and exploited it to their own ends. Artificer Xy'mox has worked with Denathrius but is mostly concerned with getting the better end of the deal, which may require the end of Nathria's invaders.
Boss icon HungeringDestroyer.png Hungering Destroyer
The devourers are drawn to consume anima wherever they can find it. With the drought decimating the Shadowlands it is no surprise that the hungriest, and most dangerous of the devourers would find the largest store of anima, in the depths of Castle Nathria.
Boss icon LadyInervaDarkvein.png Lady Inerva Darkvein
Anima fuels the Shadowlands, and Lady Inerva Darkvein seeks to unlock its mysterious. Under Denathrius's guidance she has learned dangerous secrets to turn against any of his enemies. She will strip anima from any of Nathria's invaders and use it to shape a dark new future.
Boss icon TheCouncilofBlood.png The Council of Blood
The Council of Blood preside over courtly functions in Revendreth. Castellan Niklaus is a strict military commander, with an invincible will and impentrable armor. Lord Stavros, a foppish dandy, leads the court in dance, but is also deadly with his blades. Baroness Frieda wields powerful Anima magics, and commands the Dredger wait staff... and the respect of the entire court.
Boss icon Sludgefist.png Sludgefist
Sludgefist was born in the muddy foundation beneath Castle Nathria, and now wanders the halls as he awaits orders from Sire Denathrius. His massive footsteps reverberate throughout the castle, announcing his arrival from several rooms away.
Boss icon StoneLegionGenerals.png Stone Legion Generals
The ancient Stoneborn generals, Kaal and Grashaal, have hounded the Prince Renathal's rebellion at every turn. Once they were General Draven's apprentice and mentor, now their strength, strategy and soldiers have been unleashed against him and any who would defy the Sire's will.
Boss icon Denathrius.png Sire Denathrius
Behind the scenes, Sire Denathrius has long been preparing the ultimate betrayal against the Shadowlands. He has been hording anima to feed the might of the Jailor, and only needs a bit of time to bring his plans to fruition. With his bloodthirsty living-blade Remornia, and the most loyal of his admirers, he will shred any who stand against him and cast their remains into the terror of the Maw.

Sanctum of Domination

Boss icon Tarragrue.png The Tarragrue
The Tarragrue crushes intruders before dissolving once more into the mists of Torghast.
Boss icon Eye of the Jailer.png The Eye of the Jailer
Long ago, Odyn traded his eye to Mueh'zala to glimpse into the Shadowlands, and long since the Jailer has twisted that eye to his own ends, to maintain sight on his sadistic domain of torment.
Boss icon The Nine.png The Nine
The dark pact Sylvanas struck with the val’kyr forged her bond with the Jailer. Through the years, these winged sisters faithfully served the Dark Lady, even if it meant sacrificing themselves on her behalf. Now Sylvanas calls her nine val’kyr to fight for her one last time.
Boss icon Remnant of Ner zhul.png Remnant of Ner'zhul
Encased in shadowsteel, this lost soul spends its eternity in torment.
Boss icon Soulrender Dormazain.png Soulrender Dormazain
Soulrender Dormazain serves the Painsmith, tasked to extract potent Anima stores from hellaciously brutish captives of Torghast to serve as fuel for the Jailer's armies. Step inside the Vessel of Torment with Dormazain as he goes to work on Garrosh Hellscream, former Warchief of the True Iron Horde.
Boss icon Painsmith Raznal.png Painsmith Raznal
Painsmith Raznal is a sadistic mastermind who has spent eons designing and perfecting the deadly machines and traps found in Torghast. The screams of his victims can be heard from deep within the Torment Chambers.
Boss icon Guardian of the First Ones.png Guardian of the First Ones
Pulled by the Jailer's chains from a distant, unknown realm, this malfunctioning guardian seeks to protect the inscrutable knowledge known as "cyphers". It uses the last of its power to obliterate any who would attempt to plunder the secrets of its enigmatic makers.
Boss icon Fatescribe Roh-Talo.png Fatescribe Roh-Kalo
Once a fatescribe entrusted with Korthia's countless secrets, the Mawsworn seized Roh-Kalo and bound him to the Jailer's will. With Torghast's power at his disposal, Roh-Kalo seeks to author a new fate for the Shadowlands.
Boss icon Kel Thuzad Shadowlands.png Kel'Thuzad
The nefarious Kel'Thuzad awaits at the end of the soul stream where the lich is able to draw power from an unlimited well. All his schemes and machinations have led to this final confrontation, where he has plotted your ultimate demise.
Boss icon Sylvanas Windrunner Shadowlands.png Sylvanas Windrunner
With Oribos in peril, a desperate battle at the pinnacle of the Sanctum begins. Standing between the Jailer and the mortals who would stop him is Sylvanas Windrunner. With no masks left to wear, the Banshee Queen unleashes her full power to protect the Banished One while his ultimate plan unfolds.

Sepulcher of the First Ones

Boss icon Vigilant Guardian.png Vigilant Guardian
This eternal guardian lies in wait, keeping a timeless vigil over the entrance to the Sepulcher of the First Ones.
Boss icon Skolex.png Skolex, the Insatiable Ravener
With the Sepulcher of the First Ones vulnerable, devourers swarm in to feed their hunger. Among these aberrations is the ravenous Skolex. As the great worm consumes vast amounts of ephemera, the Sepulcher is thrown out of balance and threatens to collapse upon itself.
Boss icon Artificer Xy'mox Sepulcher of the First Ones.png Artificer Xy'mox
After his defeat in Castle Nathria, Artificer Xy'mox sank back into the shadows to plot his next heist. With the Sepulcher of the First Ones now vulnerable, Xy'mox has summoned the full might of the Xy Cartel to plunder the ancient knowledge and powerful relics buried there.
Boss icon Dausegne.png Dausegne, the Fallen Oracle
Dominated by the Jailer, Dausegne leads the Mawsworn in a battle to gain control of the Forge of Afterlives. The Jailer plans to use its power to unleash an eternity of torment upon all of reality.
Boss icon Prototype Pantheon.png Prototype Pantheon
Bereft of the cosmic spirits of the Eternal Ones, these incomplete host bodies can only carry out their base directives without mercy or compassion. With the enemy at the gates, Lihuvim has little choice but to activate these dangerous prototypes.
Boss icon Lihuvim.png Lihuvim, Principle Architect
With meticulous care, Lihuvim weaves ephemera into being in accordance with the hallowed will of the First Ones. Now this process is threatened as Mawsworn forces seek to claim this power.
Boss icon Halondrus.png Halondrus the Reclaimer
For eons Halondrus traversed the cliffs of the Sepulcher of the First Ones, fulfilling its sacred purpose of reclaiming ephemera and returning it to the great cycle. With intruders now throwing this pattern into anarchy, the ancient keeper will do whatever it must to maintain order.
Boss icon Anduin Wrynn.png Anduin Wrynn
Controlled by Domination magic, Anduin is being forced to aid the Jailer's plan to remake reality. As time runs out to stop him, the champions of Azeroth must make a difficult choice: defeat the young king to save the cosmos, or risk everything in order to restore his soul.
Boss icon Lords of Dread.png Lords of Dread
Using subterfuge and guile, the nathrezim have worked for eons to bring the Jailer's plan to fruition. Now, on the brink of their master's victory, they only need to complete one final task to ensure none are left to resist the new order of the cosmos.
Boss icon Rygelon.png Rygelon
Drawn to observe the fateful events unfolding within the Sepulcher of the First Ones, Rygelon succumbed to the Jailer's domination. Now this constellar turns its cosmic power against any who would oppose the Banished One.
Boss icon Jailer.png The Jailer
For untold millennia, the Jailer patiently unfolded his plan to reach the heart of the Sepulcher. Now poised upon the precipice of his final victory, the heroes of Azeroth must rally to prevent the Jailer from dominating all of reality.