Herself Obviously

Obviously the best test was herself, before she put the book away she made sure to find a counter spell for the Hyperia charm, she found one, 'Reverta' it would reverse any change a person made to themselves, an object or another person, she decided to test it out. She pulled out her wand and pointed at herself "Hyperia Mammarias..." She said in her low voice. The spell basically grew a person to whatever size they were thinking of, and boy did Luna have a size in mind. Her wand emitted a low blue light that hit her body and when it did her breasts suddenly grew! They instantly became as big as basketballs and flopped onto the table, she bit her lip as the new sensitivity of her breasts against her shirt made her aroused. But she controlled it and aimed at herself again, "R-Reverta," she moaned a bright white light hit her blinding her, but the sensation of her boobs instantly faded and when the light cleared she was herself again. "Good... I'll test the other one in private..." she said and closing the book. She returned it back on the shelf while marking it with her special marking spell. The mark would be invisible to everybody but her satisfied she left the forbidden section and went to the Ravenclaw common room.

It was a long walk and she enjoyed the quiet of the halls as the students headed to their common rooms to go to sleep. Luna hummed a gentle tune as she walked up to the door with the bronze knocker, the eagle spoke, “If you have me you want to share me, if you share me you don’t have me, what am I?” It asked.

Luna smiled, “A secret.” she said and the door clicked open she walked into the spacious room, seeing some fellow Ravenclaws studying other’s mingling with each other. She ignored them and went to the girls dormitory to shower. She set her papers into her night desk double checking them to make sure she got the spell right and then grabbing her washing supplies went to the bath to test her new spells. She entered the bathing area where 4 girls were currently soaking in tubs. The minute they saw Luna they grabbed their bathing supplies and got out of the baths. Of course, Luna knew it would happen and she was quite comfortable with that. It just mean she’d have all the time she needed to test her new spells. She went to the tub at the farthest back and turned on the water as it ran she grabbed her wand and stripped off her clothes. Fully nude she got into the lukewarm water and held her wand up, pointing it at herself “Hermaphrodie,” she said in her low voice.

The spell hit her and she felt it the heat building up in her groin she looked at the water and saw the spell swirling there then she felt it new nerves building inside of her. She then felt the pleasure of her new organ growing and she looked down to see her 3 inch dick growing. She reached down below to feel her balls and felt them both each one as big as an acorn. That would be rectified very shortly pointing her wand at herself "Hyperia Penilius!" the magic bolt hit her and instantly her dick swelled up to a massive 28 inches in length and 6 inches in girth. It was so big the head was poking out from the water she then went for her second target "Hyperia Testicalius!" She gritted her teeth her eyes rolling up with pleasure drool sliding from the corner of her mouth as her balls swelled up bigger than basketballs. She gasped and moaned as she caressed her big balls with her free hand while the other set her wand within arms reach. She grabbed her new dick and began to pump it in excitement while her other hand fondled her balls. It didn't take much for her to shoot her first thick and copious strands of cum up only for it to splash back down onto her body. She panted as she relaxed into the hot water, she smiled her sexual desires rising like the steam she so badly wanted to ram her prick into some schoolwitch pussy...