Vel Gahrus looked up at the massive stone tower that awaited him. The dragon wore a black robe with a large straw hat, complete with a large wooden cane. He just started his adventuring days as a wizard, and he was ready to start with his first task, a simple bounty.

The bounty in question was for an evil sorcerer, a male horse that resided in this very stone tower. Vel wasn't sure why the sorcerer was evil, but a bounty was a bounty.
The tower door was closed. Vel was cautious to approach, even if it was in the middle of a pleasant sunny day. The pinkish and white anthro dragon waved his hand to check for magical traps, but he found none. "According to the bounty, almost everyone that went after him all went for physical builds, or holy paladins. I bet he's just a beginner sorcerer who plays a bunch of tricks, nothing more." Vel wasn't the best wizard, but he was confident in his abilities to win. 

Vel pressed his hand up against the door and tried to sense for traps, but he found none.  He took a deep breath and tried to open the door. To his surprise, the door opened easily! He walked into the tower, and glanced around.

Vel immediately noticed rows upon rows of books. There was the classic spiral staircase, but the walls lined up with more bookshelves. He raised his head and saw the tower was most definitely taller on the inside than it was on the outside, and all with books with an occasional table. "A little overkill on the books, but it's really impressive." Vel commented. He glanced around cautiously for any signs of monsters, just to find none.

"He's either really confident, or like I thought, more traps." Vel began to climb the staircase and sighed. He used a spell to sense for traps, but he didn't find any. He couldn't sense every spell, nor could he even sense strong spells. He remembered one time he messed up and wound up frozen for a good two days! Maybe it was his luck, or maybe it was something else though, but there were no traps triggered by him.
He expected more from this sorcerer from what he heard. He wanted to run into monsters and start using his various spells against them, but so far, he encountered nothing. The tower was big, but it also felt boring. He swore he could hear a waterfall in the distance, but he knew that should have been impossible. 
He looked at the various books and grabbed a random one. He poked his head inside it and saw pictures of tentacles coming from runes having their way with an adventurer. "Oh...my." Vel never imagined such perverted imagery in the home of an evil sorcerer. He put the book away and climbed another flight before he looked at another book, which had just as perverted images of a horse anthro sitting on the face of another man. He blushed deeply at the image and put it away. "Are all of these books of perverted nature? How can a sorcerer learn such evil magic from pornography?"

Vel wasn't sure how high he climbed. He climbed so far up that he couldn't see the bottom of the tower, but he still couldn't see the top. He paused as he saw an equine anthro sitting at a wooden desk with a book and a container of water. He raised a brow, and then double-checked the bounty. "Huh?" There was no doubt; the man he was after was right there. 

The sorcerer casually waved at Vel. "What brings you here?" He spoke in a casual tone. He wasn't even at the top of the tower, nor was he at a place that looked different from the rest of the tower. He had a black robe with an opening in front.

Vel tapped his staff on the ground. He tried to be intimidating, but he didn't have the muscles to show. He was a dragon anthro, but looking scary for him was hard. "I'm here to vanquish you! You have done so much wrongdoing that it's time someone brought you to justice!"

"You're the fifth one that's said that." The sorcerer closed his book and stood up. "Name's Mark by the way, I'm sure it says that in the bounty. Well, let's not waste any time talking if you want to try to vanquish me. Go ahead; try out some of your magical spells. If you burn a book though, I will show no mercy."

Most of the spells Vel knew were fire related. As a dragon, fire spells were the easiest to learn. That, or that's what his teachers told him. He decided to try a different spell instead. He waved his staff, and a grease puddle formed underneath Mark. "Try walking around in that!" He said with a triumph. If he could interrupt his spellcasting so he could never get a spell off, he thought he might have a chance.

"So, are we just taking turns casting spells?" Mark asked. "Would be a rather weird sort of duel, but a fair one I guess." He decided to cast a spell of his own. He knew most people used enhanced clothes and weapons, and he decided to get rid of one of those factors. Vel's clothes lit aflame, but just as soon as they were on fire, they became extinguished and revealed a naked dragon with white horns on his head and yellow eyes, complete with a human-shaped cock between his legs.

"Hey!" Vel covered his crotch with his hands and staff and blushed underneath his scales. "That's not fair! You said no fire spells!"

"There's a difference between targeted fire and random sprays of fire. My spell only hit your clothes and nothing else, and it evaporates upon touching anything else. Why do you think it didn't hurt?" He rolled his eyes. "Barely an impressive cock, by the way. Anyways, your turn to cast a spell, I suppose."

Vel began to think that he might have been over his head with this sorcerer. He thought about another spell to cast, and decided a defensive one, a reflect spell. "Okay, I'll try this then." A shine appeared around him briefly before it faded.

"A protection spell, a basic one at that." Mark rolled his eyes again. "You know that only protects you from magical elements, right? It does work on 'some' spells, but nothing physical. And a level one spell..." he cast another spell and two tentacles shot out from the floor and grabbed onto Vel. "Now that you're stuck there..." Mark slid forward as if he was on ice to get out from the grease, and quickly slid right in front of Vel. "Let's cut the crap and get down to a much more fun spell, especially now that your guard's down, and so is that shield."

Vel gasped as the tentacles grabbed his feet. He recalled the image in the book where tentacles fucked a person relentlessly from one of those books, and he feared the worst. "No!" He tried to cast a spell, but nothing happened.

"I told you, no fire spells. That was a fire spell you were going to cast, I can tell." Mark walked behind Vel and pressed his equine cock up against his ass. "You're a pretty pathetic magician, but I suppose every little bit will count." he said as he cast a spell of his own, and his equine cock fused to Vel's rear.

Vel felt the cock and gasped. He knew Mark wore a black robe, but it must not have covered his crotch very well for his to expose a cock just like that. "What kind of magic are you USING?" Vel tried to pull free, but the tentacles held his feet firmly. He dropped his staff and pressed his hands against Mark's crotch. He tried to push Mark away, but to no avail. "Get it off me you pervert!"

"It's a special kind of magic. Make love, not war." Mark smiled. The tentacles around Vel's feet wilted away, but it didn't matter. Had one looked at his crotch, they'd see that Mark's cock fused with Vel's ass, and it was slowly pulling his body to it.

Vel wasn't familiar with any kind of strange fusion magic, especially to someone's cock. He tried to pull free, now without those tentacles keeping him back, but Mark's cock pulled him in bit by bit. His tail lashed, but as it attached to Mark's cock, it shrank into it. He could feel his body shrink too, bit by bit. "Free me from this vile magic! Please! I can be...like...your assistant or something!" Vel wasn't even sure what he was saying.

"A bit desperate, aren't you?" Mark chuckled. "You'll become a special assistant." he grabbed his torso and pushed his arms together. "One that'll help me cum and orgasm, and maybe a few other things. Basically, whatever a cock does, you'll do."

Vel knew what a cock did. He strained to pull himself free, but he couldn't. He flailed his legs in the air, but he felt them attach to his testicles as the cock continued to pull him in. He felt his body pulse, and he was horrified. The pulsing sensation felt strong. He saw a vein appear on his chest, and a large one at that. "What do I need to do to make you stop this?"

Mark stroked him with a soft smile. "It's too late. You're too far gone." Mark hugged him close. "You 'need' me to live now. Don't worry. I'd say you'd grow to like it, but you're shrinking a bit." Mark watched as Vel's body went from scales to hide, a cock hide at that with molted pink and black with a flared tip, Vel's head being the flared tip. "But you'll like it either way." He stroked him softly. "So just enjoy the fun."

Vel shuddered. He felt something deep within him stir, and he had a strong feeling about exactly what it was. He tasted a salty sticky thing in his mouth and tried to spit it out, only to realize as he spit, he spat out cum mixed with his own saliva. "Ack!"

"I won't bore you with the details how it happens. It's very complicated magic." Mark stroked Vel, simplifying the dragon's features. His horns vanished, as did his arms. His torso looked like a large shaft, and he shrank down little by little to two feet in length. He was a large cock, but he 'was' a horse one. "Just know it's very...mph. It feels very good."

Vel knew how it felt. Mark was literally converting him into a cock. Without arms, he couldn't struggle as hard as he wanted. Moving even felt harder to do. He felt himself pointed upward, even without Mark holding him he couldn't move. His body throbbed hard. He sealed his lips as he felt more cum fill his mouth. He tried to swallow to keep it from escaping, but he was unable to.

"Mmm I can tell...we're so close." Mark continued to stroke Vel. "Don't hold back, you'll just make it worse. Cum for us. Cum everything out that isn't part of me and become my cock as you were meant to be."

Vel couldn't contain the seed any longer. His 'mouth' opened up, just as his eyes shrank to nothing. He came, and he came a lot. He felt his entire body pulse and pump waved after wave of seed, cumming away what chance there was left of him returning to a dragon. Forever to be sealed as not just a cock, but also a horse cock. He couldn't even think during the orgasm, as if his mind went with Mark's cum as he changed into a horse cock completely.

Mark smiled down at Vel and stroked him slowly. "Heh...there you go." He said as Vel slowly sheathed, just as a horse cock would after an orgasm. "Can't wait to show you off. I bet you're getting excited just thinking about it. Maybe if you're lucky, you'll get to impregnate someone! I can tell you like the idea; you are throbbing." He gave the cock a pat. "But for now, let's find us a new robe to wear."
