She finds one indeed

The restricted section wasn't a place for someone with limited cognitive abilities. Especially with books like the Collectiones libidinis in the shelves. It was old magic, like, really old magic, supposedly created by Utu, the goddess of fertility in the Sumerian religion. The magic of those spells is crude and wild, with a lot of side effects. Which made them hard to dispel.

So, for the poor dumb Hermione, finding a counter spell was an impossible task. So when she opened another book of the collection and read something like "fixing" and "breasts", things were unlikely to go her way.

Hermione took the third book of the collection and brought it back to her dorm room. She took her wand and pointed to her breasts before saying the incantation.

"Stultus lacticiniis"

Under the **** pressure of the spell, Hermione's wand inflated ridiculously to the point that it ended up looking like a dildo. And to add at the ridiculousness, the spell finally came out in spurts of white goo all over her tits and belly. The wand was still twitching and moving after the spell ejaculated from it, which gave some kinky ideas to the redhead. Horny as she was, she couldn't help but push it into her soaked pussy. The feeling of it fidgeting in her was incredible and she took a lot of pleasure from it.

As she was enjoying her new wand, her nipples grew long like teats and just above her crotch four bulge slowly inflated gaining a teat each, milk slowly started to drip from the six. Hermione's nose became larger and flat, almost animal like, while her hears became longer and hairy like cows, and on each side of her head sprouted 5 inches long horns. Finally, a brown cow tail appeared above her but moving around on the bed, and she gained a collar with a bell around her neck.

"Fuuuck... mooo wand is so moood !! I'm moooming !!!" She moaned, half mooing.

On the other side of the school, Luna was wandering in the corridors, the first book of the collectiones libidinis in her bag. She was wondering what fun thing she could do, she was getting really horny and she wondered what she would do first, try another spell, or fucking one of her classmate, boy or girl.