Unexperienced caster brings messed up results

Andy decided to try the spell. After all it didn't seem as risky as changing your gender or making your dick conscious.

Andy looked at the material ingredients of the spell, and brought them. Salt from the sea, well table salt will do the trick. chestnut, let's take some roasted peanut instead. A magic circle drawn with coal, you only have chalk, so... And so on.

Andy then read the spell with his thick American accent. And the magic circle flashed brightly, blinding him for a moment. Then he heard a soft female voice with a strange accent.

"Woah... It'sh been shutch a long time shinche I've called... I'm all shitff... !"

Opening his eyes again, And took some times to see the purple halo fading from his sight. And finally he saw the naked lady on his bed. Long black hairs with a blue strand, Long eyelashes, piercing blue eyes on a beautiful face, perky tits, tattoos, and piercings. She looked human until he noticed the long pointy ears and her black pointy nails looking like claws. She was looking at him with an amused smile.

"Hi... mashter..." She said to him.

When he called for a sexual parasite, he didn't expect it to look like this. So, after his shock from the surprise, he asked confirmation.

"Are you... uh... a sexual parasite ?" He asked.

She immediately made a pout. "Do I look like sheezes little fuckers ?" She said. "I'm a dark fey, you didn't want to call me, mashter ?"

As usual in front of a pretty girl that he felt like he offended, Andy panicked.

"I'm sorry !! I didn't want to insult you, I messed up in the spell somewhere, but I'm happy you're there !" He told her.

The fey stood up, she was few inches taller than him, her crotch was hairless and he could see her clit slightly out of its cap. She came so close that their nose were almost touching, she put her arms on his shoulder and looked into his eyes.

"Why are you happy to have meshed up your spell, mashter ?"

"I... I... uh... You seem really nice... and pretty..."

She then looked dead serious. "I'm not niche, I'm a bad fey, and I want to do bad shings wiz you, mashter..."

Andy was already really hard, but he almost came in his pants when, after she said that, she showed her split five inches long tongue. But as his mind was blank from arousal, someone knocked on the door.

"Andy ? are you with someone ? You may be an adult in the eyes of the law, but I don't want any funny business under my roof, ok ?"

It was his mother and he knew she was about to burst in. She was quite strict about boyfriend and girlfriend in her house.

"Shit ! You have to hide !" Andy whispered to the fey, looking around to find a spot to hide her.

"I can hide in your shadow, if you need to, mashter. Just say you allow me..."

"I allow you, I allow you ! Quick, hide !"

She then seems to jump and turn into a stream of black smoke before disappearing in Andy's shadow. At the same time, the door opened and Andy's mom came in looking annoyed.

"You can answer me when I talk to you !" She said, before looking around. "Where you talking to someone ?"

"I... I was talking to myself." Answered Andy, covering the magic circle by pushing the rug with his feet on it.

"Mmh..." His mom said, not looking convincing. "You and your sister, always hiding things..."

"What a buzz killer... We should arrange zat, togezer we have the power to." Andy heard whispered in his ear.

He then felt compelled to indeed alter his mom, just a little bit, just enough to make her more nice and open minded... He felt a dark power growing in him, it would be so easy for him to use it.