The Mistress
The dull chanting echoed throughout the dimly lit hall. An ex imperial temple now held the scene for a debauch and horrific ritual, cultists performed many activities around the chanters which circled a large daemonic cauldron filled to the brim with sacrificed blood. They were draped in various robes, but mainly black or in the spectrum of red or blue. These heavy robes hid the faces and the weapons they all carried, despite their fervent belief that what they were doing was more powerful than the imperium.
The chanting grew in volume and the gore seemed to react and bubble in excitement preparing to spew forth whatever monstrosity would be drawn from the warp. None of the cultists present had a sense of what they were actually doing. To allow a warp entity into the material realm was an extremely dangerous process, luckily, or unluckily for these cultists, they had a guiding hand.
From the bowed cultists point of view they spotted a few slender fingers appearing on the rim of the cauldron. Slowly a few tentacles sprouted from the viciously bubbling crimson, they rose slowly attached to a humanoid shaped head. No nose was present upon this otherwise perfectly formed face, and lively purple eyes seductively gazed upon the cultists who performed in many acts of depravity. The lips parted to give the creature a shallow gasp of air as its neck cleared the line of blood, the tentacles shining with gore snapped back against her head and down her neck, mimicking hair.
A claw rose out attached to her left arm, and some amongst the crowd reacted with fear while others reacted with an overwhelming sense of awe. She memorised their faces. The rest of her perfectly formed body slowly followed and once her waist became clear of the cauldron she stepped out revealing large avian like feet and forelegs.
She took a deep sensual breath as the cultists finished the chant, locking her into this world for as long as her will allowed. Her gaze hit all present and a smirk appeared across her face realising all her followers were fixed upon her otherworldly form. She began caressing her skin with her claw while she made an eerie bird like chirp. "My children" she stated her voice beautiful beyond mortal understanding, soft yet unbelievably powerful. "I thank you, for allowing me to come through to this world. We will begin a journey as a family that will be of the highest pleasure. I know why you are here, and I will grant you a gift. This is the kind of rewards you can garner from His worship."
She took another deep breath and a psychic impulse ran through the ancient building. None of the cultists seemed to react, but they witnessed an astonishing change. The creature stood before them morphed into a beautiful woman, naked with long golden hair, satisfying every desire with her womanly features. Into a man with short black hair, piercing blue eyes and the physique to rival that of an Astartes. Into a tall, very slender alien looking female with pointed ears and tattooed skin. Although none of the cultists saw the same being stood in the spot where the creature was, they all experienced the highest point of arousal they ever would.
"What you see my children" she said mimicking the sounds of ecstasy, "is what you most desire. Following His worship will bring these kinds of fantasies to life." She ended the mirage that entranced them all, instead choosing a natural human form, although far more attractive than most, there seemed no sense of unholy grace.
"To gain His voice, to allow Him to whisper into your ear, you must cast aside the false hoods taught to you. The Prince of Darkness is watching as you make this oath. Now!" She yelled. "Who is the enemy of mankind!"
"The Emperor!" All the cultists yelled in unison.
"What is old, decaying and ready to be crushed!" her face was stern and her eyes slowly darted from person to person.
"The imperium of man!"
"Who are the ones responsible for more deaths of humans than any of the supposed enemies of mankind!" She moved behind the cauldron of blood and lifted her arms into the air awaiting their proclamation.
"The Astartes!"
Her voice unnaturally bellowed to a height that shook the very core of this ruinous temple.
"And who is the one true God, the saviour of mankind, and the one you should worship to obtain that which you desire!"
"Slaanesh!" The crowd roared and repeated several times. A satisfactory smile appeared across her face. She forced the cauldron over and let the blood run down the steps into the crowd of adoring minions. They manically began to drink, bathe, caress each other in the blood. As the acts in the fallen building got worse and far more unspeakable to any sane human being, she graced them with her presence but not with a touch.
One particularly unaware follower reached out to stroke her "My lady!" he exclaimed. The beheading was swift and most did not even see her move, they only saw the cultists face of awe roll across the floor starting its own small pool of blood that unnaturally flowed towards the rest. She stared at the life force of the foolish mortal who dared to lay an unwanted hand upon her perfect human form.
"It's Mistress, to all of you!" she said her face stern, the monstrous claw reverting back to the guise of a human arm. "Don't start indulging in all your whimsical fantasies just yet. I require one of my dear sisters here with me." Her eyes returned to their natural purple distinction and scoured the crowd. "Begin with the process" she stated with a void of emotion that sent chills to many of the cultists who couldn't help but obey.
She sat upon a prepared throne with a satisfactory smile as she watched the pitiful lesser beings going about the requirements to make the next successful summoning.