(General POV)
Location the Hiveworld, Kolbaline on the Chaos Spire of Three Queens
Ever since the Queens-to-be have earn enough to ascend from the various atrocities, offerings/sacrifices, and deeds in the name of Chaos, Carnage and the Dark God that has bewitched and watched over them for years they each were placed inside a special cocoon of warp-energies for unlike Chi who ascended by direct contact with the Immaterium and the Nethervoid, or Kiira who was created as a Daemon Queen these three women were ascending in both Realspace and Kolbaline wasn't highly corrupted at the time so they're followers the Flesh Horrors, Iron Kollarz (Gobos), and Chaos Guardsmen/Crimsontear Battalion managed to defend and move the cocoons into a more safer location as their bodies twist, break, reshape, and ascend by the ruinous power of Carnage.
These three Chaos forces all worshippers of the Dark One came together and constructed a enormous tower in the farthest reaches of Kolbaline calling the Chaos Spire of Three Queens using Psy-Daemonicus Forging from the Gobos, advance tech and resources of the Crimsontear Battalion possession and the Bio-crafters implanted knowledge and body modifications they all build this symbol of Chaos, and atrocious creature/structure far away from the Kolbaline Guard's knowledge.
This sky piercing tower/spire was made from the strongest metals in Kolbaline along with the bodies of over 10k humans to appease their Dark God in its construction more then 100-floors tall, as burgundy and maroon tone flesh was merged with black metal, stone, wire, and tubing this chaotic biomass covered around 64% of the structure inside and out with spikes, curved razor-sharp blades, needles and eyes sprouting and pertruding from all around the spire, at the exact center a humongous black eight-point star was embedded into the spire which quickly got smoldered in the corrupted biomass which transformed into a giant daemon head exactly like the mark of Carnage as the creature sprout multiple marooned tentacles out it mouth each extremities has several eyes and mouths with multiple rows sharp-teeth as they whisper the will of the daemons of the Warp which the cultists, fanatics, and Psykers unquestionably obey as the Chaos Guardsmen turned into Chaos-Psykers became the lieutenants and new commanders until their ladies complete their ascension in daemonhood, on top of Spire/Tower within the top surrounded in row of curved razor-sharp spiked spikes, these curved multiple tower spike blades all act as a protective black and violet cage within are three flesh made cocoons of violet, purple, and maroon colors these cocoons were created by the Dark One himself as a final protection and womb so they can ascend with the warp-energies of Chaos while Laharl and his daemons waging war against Khorne.
Because of this war Laharl bended the energies of Carnage, and Chaos to make these cocoons and commanding the strongest Psykers in Cassandra's Crimsontear Battalion to go into the three locations of his Queens-to-be in the Last Sactumrum to the Hive-cities that the Chaos Kolbaline Guardmen, and the Iron Kollarz were in the middle causing chaos and carnage to secure their cocoons and take them to safer location as the Dark One was force to stall their ascension into daemonhood while the first Chaos War between Laharl and Khorne was underway.
This also meant that was suppose to take hours has turned to years as the forces of Chaos were forced to relocate around the Chaos Spire of Three Queens while they protect it less they feel the wrath of their Dark God for failing but this also spawn a more horrific war on Kolbaline against the united forces of Carnage while the Kolbaline Guard were now completely under the command of High Lord De'sanguine who took complete control of the military forces of Kolbaline as war raged between the two massive armies slaughtering one another for either their world or for Ruinous Power of Carnage.
This completely infected and spreaded the corruptive power of Carnage, once a massive Hiveworld, the lost jewel of technological marvel the most advanced and shining world rule by humanity if not for the Warpstorm they probably fell into techno-heresy but now their being infected by Laharl as 45% of the world is corrupted with Carnage forming violet spots on the planet from view of space.
This war has been raging for years as the vile powers of the Immaterium was starting to effect the population as they fall into the worship of Chaos reinforcing the forces of Chaos with Chaos-touched Guards and Civilians, Chaos Cultists, Mutants, Forsakens, awaken Psykers and also the most greedy and power hungry as humans are known to be try to earn more favor and power from the Dark One has resulted in the over-mutation gaining to much blessing from Laharl has resulted in the first Chaos Spawn that ever emerge in the Materium, these super chaos mutant brutes only obey the strongest Psykers in the forces of Chaos.
Location the Nethervoid, Castle Neo Oblivion
This greatly pleased Laharl as he has returned to his domains currently was resting upon his Ebony Throne within the Nethervoid with his beloved wives Chi Aahtahg and Kiira Blakenroze resting on his throne's armrests laying to their beloved husband as he was healing from the wounds he suffered in the fight against his young brother, Khorne he felt his right eye and single wing of his base form slowly restoring themselves as he couldn't risk Khorne's daemons not striking while he was indeposed so in the edge of his territory and the Bastion Stairs he placed Mordred Deathharbinger as the guardian and ruler of the area.
The mortals of Kolbaline both the Chaos-touched humans and adhumans (Gobos) are earning the favor of Laharl as he gained some Chaos Champions and Sorcerers which he bestowed many blessings including Chaosbrand scepters for his new powerfuk Psykers/Sorcerers blessed by Chaos also like lore and human nature many of these rising Psykers' greed for power has turned many of them into Chaos Spawns that made, the first ever to "spawn" within Realspace before the Horus Heresy Laharl knows that the Champions, Sorcerers, and Spawns will grant him some rewards especially one Chaos Spawn that was a Guardsman that became insane consuming the dead of both the Kolbaline and Chaos fallen believing he can absorb his victims essence this turned him into a highly mutated Chaos Spawn earning Laharl's so he bended his dark powers to manipulate the form of this Spawn creating a great beast that hide in the shadows of the Chaos Spire of Three Queens as a guard he was inspired, based and name this Chaos Beast the Nidhogg once the world is fully in his thrall and within the Wsrp he turn that Chaos Spawn Titan into a Elder Daemon for his Nethervoid.
He decided to focus his Materium Communication to see what has happened in Kolbaline and he was greatly pleased in the war and corruption of the Hiveworld as his followers and worshippers are protecting his dear Queens/Wives-to-be that are Scalpel Bleedinhart, Jade Emerlhyde, and Cassandra Crimsontear as he used his Materium Manipulation to hasten the three ascension while communicating with each of them while they slumber and are reborn as Daemon Queens.
As the Dark One watches from his throne he waits for the fast approaching awakening of his third, fourth, and fifth fiancées/Daemon Queens once they do he send his daemons through a rift to conquer and corrupt Kolbaline in his name.