Twilight closes the frilly red and pink book and begins to let her horn glow it's purple aura before it starts turning shades of pink from tip to base. With spell in mind, she hopes that she can get the intended purpose of the spell down first hand or else suffer less desirable feed back from the spell. She lowers her horn as the foreign spell finishes charging and points it towards Spike her very much willing subject.
Well. Willing in her mind.
Spike, currently chained to the floor do to him not wanting to be the test subject again of Rarity who has also been practicing magic or Twilight, is currently pulling at the chain holding him to the floor and glancing nervously towards the horn. He'd breath fire against it, but the last spell cast on him made him breathe a pink mist instead. Something, that he found to his discomfort, actually makes him very much excited when he breathes it in. Sure it smells sweet and delicious, he doesn't think now is the appropriate time to feel aroused by something.
"Now hold still Spike. I promise this won't hurt a bit!" Twilight tries to reassure Spike as he stops and faces his destiny.
"I don't know about this Twilight. I know you're eager to learn and please the princesses, but I really think you should really ask Cadence to-"
"Enough talking and more magic!" Twilight exclaims not wanting to hear Spike rant again and always impatient when it comes to new magic.
The spell fires out and hits Spike directly into the chest. He starts buzzing and spinning in a circle as his body glows pink. He stops facing Twilight with his eyes closed. Spike opens his eyes to reveal pink hearts where his pupils used to be. They beat like real hearts for a moment before settling.
"Now if the spell worked..." Twilight lifts her head up excitedly and walks over to Spike, "Anything you'd like to tell me?"
With a giggle Twilight watches as Spike twitches twice before opening and closing his mouth. A grin slowly spreads across his face as his eyes Twilight up and down with what seems to be a hungry look. A growl crawls out his mouth as he takes a step towards her. In between his legs grows a small member known to belong to dragon race. It fits his body perfectly as his reptilian sheath opens to revel his small pink growing prick.
"Remember how Celestia said you should make sure you cater to all my needs?"
Twilight can't help but giggle again as Spike walks towards her aggressively. The chain stops him after a bit, and his head turns toward the chain stopping him from the delectable prize in front of him. He growls, grabs it, and start yanking at it for freedom. Normally, this wouldn't matter at all to Twilight since Spike was never the strongest of creatures in this town, but with the spell. The wood groans as the pad connecting the chain to the ground starts lifting up.
"Halt." Twilight says sternly making Spike stop but still eye Twilight hungrily while letting go of the chain.
The spell Twilight just cast is supposed to make someone a slave to their lust. They're meant to only follow the commands of the person that cast the spell in hopes of sexual release. Which, by coincidence, is the way to end the spell. If the person who has had the spell cast on them tries to break the spell themselves, the effect only worsens and more back up happens. The other part of the spell is to enable the person enchanted to gain more strength and magic capability.
Though at the same time, you run the risk of the enchanted person becoming more powerful than the caster. In the case of that happening, it usually ends in some sort of form of rape and probably death if the victim is vengeful of being controlled. Though it's a rare case since only few use this sort of magic. But now this type of arcane has two more students to it's carnal art.
"How do you feel Spike?" Twilight asks approaching closer to Spike as she circles him.
Spike looks at his hands and flexes his fingers. He smiles and looks up.
"Powerful. Hungry. And not for food either. I have this... burning need to take you. To take everything. Spike. Wants. More." Spike says his eyes dilating as thoughts enter and exit his mind all the while his member throbbing in the open.
Twilight can't help but wonder what would happen if she cast the spell on herself or the way to counter act such a spell. Thoughts for later most likely. She's sure to have a lot of time to discuss things with Rarity on their way to their destination.
Twilight walks up behind Spike and lights her horn. She reaches out with her magic and grabs hold of Spike's member. It begins to make a humming sound as vibration and pleasure shoots through Spike's body. He seems even more responsive than usual to this as he shoots his load faster than Twilight predicted. Apparently it increases combat abilities, but definitely not sexual abilities. In fact, she can say the spell makes them even worse.
Spike collapses on his knees panting. Being free from the spell, he tries to scurry off before the chain reminds him he's here to stay whether he likes it or not.
"I didn't like that at all Twilight... I didn't feel like myself... Sure I felt stronger, but I felt real... dirty." Spike says as he looks up to Twilight who's currently jotting things down on a notepad.
"Sorry Spike. You know nobody else would let me cast spells on them and we haven't see owlicious in a while now. Plus with you, there's less likely of a chance that I put too much oomf into it since you have natural magic resistance."
Spike mumbles something since he's got nothing at the moment to counteract her statement. Twilight smiles as she closes the notepad and places it inside of her saddlebags. She takes the checklist off the table towards the middle of the room and looks it over one last time before giving an approving nod. She starts for the door as she sets the saddle bag on her back, but soon a cry from Spike reminds her of something very important.
"Oh! I'm so sorry Spike! I almost forgot!" Twilight takes the chain in her magic and makes it completely disappear.
Spike crosses his arms as he walks up to her, "Please promise me you'll be safe while out there? I know the map means well and everything, but I still find it pretty fishy about all of this..."
"Yes, Spike, I understand your concern. The map is some how tied to Starswirl the Bearded and a lot more than we originally thought. Celestia said that she was going to get a couple of stallions and mares to look into it, but for now we just go to where the map wants us to go and figure out the reason why. The map has proved to be helpful and has opened up the world to us a lot more. It's amazing, but at the same time very frighting." Twilight says as she lays a hoof on the door.
"Also, don't eat the house up while I'm gone." Twilight says before exiting out the room.
"Not like you wouldn't be able to rebuild it..." Spike mumbles back before kicking at the crystal floor.