Flora yawned exaggeratedly. "You done twinkle toes? Or do you need to look up her nostrils as well?"
Petal blinked. "Uh, no, that's everything, I couldn't find a thing wrong with her, the most you can say is that she's rather magically powerful. Miss centaur if you ever wish to join the Mage's Guild we would welcome one of a calibre such as yourself." The fairy adjusted her white robe, tugging at the neckline.
"R-really? But I tried before and they rejected me…"
"Well, who's to say that whatever was done to you hasn't made you better magically too Fey? A larger body, a stronger body, and a bit more powerful magic as a side effect? It does make a certain amount of sense right?" said Ellaria.
"I, I guess."
"All the more reason you should totally stick with being a big dicked centaur in my opinion," said Flora.
"Not worth the risk. We don't know what might happen in future. Fools gamble on unknowns," dismissed the elf.
The fairy cleared her throat suddenly. "We can do some subsurface tests that might provide a clue. Uhm, say, is it getting warm in here?" The fairy undid a button of her robe revealing a bit of cleavage.
"Subsurface tests?"
"Yes, yes, it shouldn't take long."
The fairy gestured and Fey followed until they came to a small standing curtain. The curtain wasn't particularly large so Fey wasn't able to be hidden entirely behind it and her front half poked out.
"Uhm, what's this for?"
"Well, to get the best sample I believe we will need to focus on the part of the body most clearly affected. If there is anywhere that we will be able to see some kind of magical effect it will be your uhm, novel appendage."
"She's saying cock Fey. She wants to put a magnifying glass on your big juicy horse cock."
The fairy cough choked and had to take a moment to clear her throat and put a hand over her mouth. A little bit of drool came away with her hand.
"Your, uh, gnome friend has a way with words."
"I am a poetic wordsmith beyond parallel, I know," said Flora serenely.
The fairy flatly ignored that and produced what appeared to be a wand and a measuring tape. She then drifted down below Fey's barrel, a flush slowly building on her face. By the time she reached Fey's throbbing horse cock her eyes were round and her breathing was starting to get heavy. As she neared the smell of it filled her nose until she could smell nothing else but the pleasant musk, her nostrils flared unconsciously drawing the scent in. Up close the mass of meat was simply vast, the larger veins alone were as thick around as her arms, it's girth far larger than her entire body.
"Gods how is it so big, it's so so much bigger than me," she murmured.
The cock throbbed at her words as though enjoying the flattery.
The fairy swallowed nervously and put a small hand against the mass that utterly dwarfed her, her tiny fingers weren't even large enough to wrap around the nearest vascular vein. She put her palm up against the wall of flesh.
"H-hot. It's burning up."
"I-is this part of the procedure Mage Petal?" said Fey nervously.
"Yes, absolutely. Please remain still."
The fairy licked her lips and flitted up over the top of the horse cock. She slowly lowered herself down until her bare feet touched down on the hot top side of the cock. She slowly stopped flapping her wings until she was balanced on top of it, heat radiating up through her legs.
She took a moment, feeling how the soles of her feet felt against the hot and hard surface, she could feel each beat of Fey's heart vibrating her tiny body.
Bracing herself she held up the tape measure and walked it to the base of Fey's cock, nearly tripping over a particularly thick vein in the process. She had to duck a bit to reach the space between the penis and her barrel but she managed to get the tape down and stick it in place as it was magically designed to do. She turned and made her way back down the shaft, her arms outstretched to keep her balance as it bobbed up and down, the soles of her feet pressing down on veins, she could feel the blood pumping through the shaft powered by Fey's powerful horse body.
"A-almost- the-"
Fey's cock jerked, bouncing upward, and her head collided with the underside of Fey's barrel. She fell down with a whump, her legs splayed across the trunk of the shaft, her robes split wide, her muff crashed down against the hot unyielding surface and she let out a squeak. A hand slapping over her mouth in an attempt to muffle it.
"Is everything okay?" asked Ellaria from behind the curtain.
"Y-yes! Everything is completely fine! Please do not interrupt what I am doing!"
She'd come down just before the head of the cock and she used her thighs to steady her self and brought up the end of the tape measure she still had in hand. Leaning forward she pushed the end over the head and took a measurement.
"T-two f-foot and- h-holy fuck- e-eight inches," she breathed.
"I'm not sure how this helps Mage Petal!" said Fey biting her lip.
"It definitely helps. A good magical analysis starts with data, and measurements are an important part of that," said the fairy swallowing a mouthful of saliva.
"O-okay."
"Chill out Fey, at least you know for a fact you have a certified beast down there now."
The fairy shifted her hips that were straddled over Fey's shaft, a damp patch left behind with each motion. She pulled on the tape and it came unstuck from Fey's base allowing her to gather it together in preparation to measure her circumference. She shuffled back a little to make space to measure. Unfortunately her muff was dragged over a particularly vascular vein in the process, pressing up against her clit. She let out a low whorish moan.
"Enjoying yourself pixie puff?" came Flora's voice, the leer actually audible.
"Wha- I'm not a pixie! That's highly offensive to fairy k-kind!"
The fairy began to unconsciously grind her hips into the vein her puss was resting on top, rubbing the surface over her groin and smearing her puffy lower lips apart.