Why you just don’t mess with Dark Magic

Thirteen year old Twilight Sparkle was sitting quietly in her room in Canterlot Castle, reading a book on magical terms for her class on enchantment magic.

“Spell book; a book detailing the process of how to cast a spell though mental memorization, non-magical. Spell tome; a book bound with magic used to cast complex and hard to comprehend magic. Example, the Solace Lunar tome had been use to cycle day and night by the magi counsel before Celestia took over the duties to raise the sun and moon. Tomes need only to be fueled by a pony’s magic and can adjust the variables when specifically needed. Tomes can have one or a series of spells to complete complex tasks sometimes even the best magi can’t perform off of mental memorization. Gem; common container for pure magic, gems can be used in combination with enchanted object, tomes, or built to hold enchantments themselves.”

Ding dong dong ding, Twilight looked up at the grandfather clock in her room, signaling it was 7 o’clock pm. She smiled “Good, Celestia should be leaving for her weekend business in Manehattan now, which leaves me free to check this out.” Twilight pulled out a black tome with four purple garnets on the spine. She rubbed her hoof over the cover feeling the indent of a title that had long sense lost the ink from when it had been pressed into the cover. The title she could tell was in pony Latin, which she was also studying, but sadly for her all she could make out was the word that translated to novice. She smiled at the tome as she flipped open the book and scanned the pages for a good spell to try.

meanwhile in Celestia chambers

Celestia sighed as she laid on her bed with a cup of tea watching her student through a crystal ball spy glass. Allowing her to see Twilight comb over the fake dark magic tome without her ever knowing. She smiled as she thought of the tome she so carefully crafted 900 years ago when she came up with the idea. Disguise a regular magic tome as if it was a tome of novice dark magic. In truth the long series of spells she had so meticulously worked into the tome would ensure it would parade her around the castle in the most embarrassing situation. All the castle staff currently knew what lesson was taking place. So they knew what to expect, and to play along. The gems where enchanted to forcibly exhaust Twilight's magic the moment she tried casting any of the fake dark magic, and repeat the process to keep Twilight trapped, and to also continue fueling the tome until the lesson was over. Though safe guards were in place to not endanger her students, and one of the gems full of her magic to use as backup in case events taxed the book more then what her student could put out. Such events hadn’t happened yet but it’s always better to be safe than sorry. Plus the continued exhausting of magic helped keep the simulation feeling real to the student.

“Oh Twilight, do you really think a magi would be so careless with such a tome as to drop it just outside the forbidden section? Teenagers, always so gullible.” She spoke to herself as she watched Twilight begin to channel her magic getting ready to try and cast one of the spells.

back in Twilight's room

Twilight was smiling as she gathered her magic. To what she could read in pony Latin the spell was a summoning spell for an imp to help her wright notes. “This is perfect, Spike is still in diapers, and I could really use the help with my weekend homework. Ok I’ve gathered enough magic now reach out and… hmmm this doesn’t feel coleeek Oh no no no.” Twilight said, panicking the moment the book grab her tether, and started to drain everything she had. The books pages where flipping back and forth as more and more the book took of her magic as it had a death grip on it. All to soon Twilight was dripping in sweat as she collapsed to the floor exhausted. The book took all she had only stopping just before she blacked out.

The book hummed with her magic as it lifted her up and laid her on her back. She was still awake but had no strength left to fight. A few pops and flashes went off as the book summoned objects. Twilight blush seeing a diaper, foal powder, a large onesie, and a pink blanket. The books magic lifted her hind legs up and slid the diaper under her rump, threaded her tail through the hole, and powdered her rump. The book then spread her legs and pulled the front of the diaper up between her legs and snugly taped it on.

“oh Celestia what have I gotten myself into.” Twilight thought as she was helpless to stop the book from dressing her in the onesie. It moved her exhausted body like she was it's personal doll. Once it was snapping the flaps between her legs she got a better look at the onesie, it was pink with her cutie mark on the front with frilled sleeves. Then four little pink booties and a pink bonnet started to work their way on to her. Apparently there where other things summoned outside her field of vision. Then twilight was levitated into the air as the pink blanket started to bundle her up snug and warm, and even more helpless as she was now just a little bundle of embarrassment.

She was held in the air as a bottle filled with a white liquid she could only guess to be ether poison, milk, or formula was pushed into her mouth. She could feel the magic forcing her muzzle to suckle and drink from it. She tasted a sweet cream as it went passed her tongue and into her tummy. As she was being fed, the book had her tag along while it went around her room and in flashes and pop replaced the furniture. Her desk swapped for a changing table, her shelves with all her books gone in their place a toy chest and a lot of plush toys, thankfully Smarty Pants was still there now with a lot of friends. Finally her bed got replaced with a white and pink frilled bassinet which she was placed into. The now empty bottle was taken away then replaced with a pacifier that she felt stick to her lips like glue, and her muzzle start suckling on it as well. With what little strength she could muster she turned her head just enough to see the clock just as it struck 8 o’clock. Her exhausted mind had one last thought as she slowly fell asleep to the ding dong dong ding. “heh same time as Spike.”