Mephisto reveled in the power he now held over the highly corrupted and sexualized creature before him, who once was the mortal woman, Wanda Maximoff. The way she had called him 'Master' made his already erect cock throb in anticipation of claiming her body, as her now-demonic tail pulled him ever closer to her white-hot pussy. The Hell Lord grinned lecherously at the sight of his once defiant pet's slick slit. It was his to claim and he was going to enjoy it. As far as Mephisto and the now-demonic Scarlet Witch were concerned, the entire immense cavern that housed the Mystic Mirror belonged to them and no one else at that moment. A low, throaty growl escaped the red-skinned demoness' lips just as Lord Mephisto was about to plunge his mighty shaft into her waiting folds.
"Enough of this!" came a loud, unexpected voice that shook the Hell Lord and the demonic former Avenger out of their revelry.
Both demon lord and succubus looked up from their foreplay to see Doctor Strange standing close to the Mystic Mirror with an impatient look on his face. Scarlet Witch's expression immediately shifted from that of pure pleasure to a mask of utter rage. The changed heroine gnashed her deadly fangs at her fellow fallen comrade with a menacing growl to signify her displeasure. She coiled back, ready to lash out at the still-mortal man with her razor-sharp talons at any second, when a much larger clawed hand gripped her sleek, crimson shoulder. The Scarlet Witch's gaze again shifted as she looked up at her Master with a questioning look in her cold, featureless black eyes. Mephisto ignored her for a moment and looked down at his longtime foe with a devilish smile on his face.
"Come now, Stephen Strange. We have battled for so long. You, the constant thorn in my side fighting for the light, while I control the legions of darkness. And yet here you are in my realm and I can feel my evil Seed of Sin germinating within you. It has corrupted countless others before you, including the Fanatic Four as well as your fellow magic-user here," Mephisto bellowed, gesturing toward the changed form of the Scarlet Witch, "You too shall call me Master and assist me in taking over the so-called Utopia you helped defend for so long, Sorcerer Supreme."
"Yessssssss," Scarlet Witch hissed, her face shifting from a mask of utter rage, to that of awed excitement. She looked at the Doctor with new eyes and she slowly stepped toward her fellow mortal magic user. She tentatively brought her taloned hand up to Strange's face, but he quickly brushed her away. Her glistening black lips curled in a pleased smile. He was fighting her. A newly-born Succubus! A surge of excitement shot through her at how powerful Stephen Strange was, and how he would serve her new Master.
"Stephen," the demonic woman husked, running her hands over her shiny, smooth body, "Come to me. Come to me and look into the Mystic Mirror. Trust me, I was nervous, too, but it shows you the truth. I embraced my true nature at our Master's side and you shall, too! Come to me. That's it."
To Doctor Strange, Scarlet Witch's words echoed and whispered in his head, and they didn't stop there. It was like they bathed his very soul with her seductive call to abandon everything he had stood for and to look into the Mystic Mirror. Without thinking, he stepped forward and into the Scarlet Witch's welcoming arms. He could feel their shared link brought about by the Seed of Sin grow stronger and stronger, and soon he surrendered to the demonic woman before him. She brought him in for a long, sensuous kiss, her forked tongue dancing around his lips and inside Stephen Strange's mouth. Before he had a chance to fight it, he was responding in kind.
'Don't be scared,' the Scarlet Witch's voice whispered inside the Doctor's mind. Her voice was so hypnotic, piercing the Doctor's fierce sense of resistance, 'It is so exciting, Stephen. Fighting for the side of good. It has been so boring to you. You crave something new. All you need to do is look in the mirror and you will never be bored again.'
As the two kissed, Lord Mephisto watched on with a pleased smile. His newest concubine was serving him well. The Scarlet Witch never broke the kiss, as she led him over to the giant demonic hell lord. She then broke the kiss and Doctor Strange opened his eyes, a new hellish fire burned bright in them.
"You know what you must do," Scarlet Witch husked, running her clawed hand over Doctor Strange's chest. She lingered for a moment on the sacred Eye of Agamotto amulet that was one of the Doctor's trademark mystic items.
"Now, my dear Doctor," Mephisto bellowed, "Will you look in the Mirror and become my servant eternal? My very own Sorcerer Supreme?"
"There is just one thing, Lord Mephisto, before I look into the Mystic Mirror," Doctor Strange spoke, dropping to one knee and bowing his head in reverence to the Master of Hell. He then looked up from his bow with a fiery look of revulsion on his face.
Mephisto's face fell for a moment, wondering if this was a cleverly hatched trap that the Doctor had cooked up on the spot, as he had done countless times before. Doctor Strange reached back and unclasped the chain that held the Eye of Agamotto and took off the Cloak of Levitation. He then stood up and presented both magic artifacts for the Mephisto himself and looked up at the red-skinned demon.
"Yesssss, Master!" the Scarlet Witch hissed, looking up at Mephisto with an excited, pleased smile on her demonic face.
"Quiet, my child," Mephisto boomed, before turning back to face the defeated Doctor Strange.
"Accept these ancient tokens, Lord Mephisto. Do with them as you wish," the Doctor proclaimed, once more bowing his head in submission before he proclaimed, "I cannot resist the evil that is now a part of me. I, Stephen Strange, the Sorcerer Supreme, protector of the Earth realm and your longtime adversary, am now and will forever be your faithful servant."
Mephisto's black lips slowly curled into a pleased smile, before he began a loud, triumphant laugh that echoed throughout his hellish realm.