Tyler shifted his new bulk from hoof to hoof. He found that his new quadrupedal form wasn't a hindrance. In fact, he didn't even have to think about it and all four legs moved effortlessly. He felt strong, masculine, and oddly serene, as if all the troubles he had before weren't as important anymore. The transformation duel, the witch Kylie, all of it didn't phase him, but didn’t escape his notice. What was more interesting, he found, was the burly man in front of him. Tyler knew he had been at least bisexual, even developing a slight crush on his best friend James as they had gotten older. But James’ spell changed that too, making him completely gay and cementing his feelings towards his friend. And with his newfound serenity, he quickly deduced a way to gain the upper hand.
“I like this body,” he said in a deep, mellow voice. “And I like yours. But I think I’d like it even better if yours were similar.” He cast his spell.
James grunted as he felt his ass begin to inflate and swell against his jeans. The tight blue pants ripped as a thick, long tail burst out of his ass. The jeans continued shredding as his legs lengthened and thickened, two nubs appearing at the top of his legs. Dark brown fur spread across his thighs as they thickened with muscle. He started to lose his balance as the nubs lengthened further into complete horse legs. He fell forward and landed on all four of his now completely horse legs. His upper body did not change at all. He still had the same lumberjack build and beard. The changes slowed as he stood at the same height as Tyler. He began to appreciate Tyler’s body more and more with each breath he took.
Then came the next part of Tyler’s spell. James was so caught up in ogling Tyler’s body that he barely noticed that his asshole tingled and felt a little warm. Tyler smiled as his nostrils flared, inhaling James’ powerful pheromones. No one would be able to resist them. He felt a tingling in his ass as he started to release his own strong pheromones, one side effect of the pheromones. His equine dick hardened to its full length and throbbed as did James’. Their faces were flushed with arousal as they inhaled each other’s scent. They approached each other. Tyler grabbed James’ torso and pulled him in close. Their lips mashed together, their tongues wrestling in each other’s mouths.
“Wait, hold up!” Kylie the witch said suddenly realizing what had just happened. She stepped forward, intending to put a stop to this. “What are you-?” She inadvertently took a whiff of both James’ and Tyler’s pheromones. She moaned. Her eyes became glued on the centaur’s dicks. She barely noticed that her own ass began inflating, her arms bulking up, her hair shortening, and her legs emerging out of her dress as four very strong equine legs. You see, Tyler’s spell made it so that no one, especially humans, would be able to resist the pheromones and would become gay, male, and horny centaurs. And Kylie didn’t recognize the spell until it was far too late, succumbing to the effects of the pheromones.
As her equine lower half sprouted a tail and a thick cock, her asshole also began to exude the same irresistible pheromones. Her breasts flattened into thick pecs as her shoulders broadened. She, now he, moaned and rubbed his now muscular upper body. He couldn’t believe how horny he was.
Soon, the effects of the pheromones spread down from the stage and into the audience. Gasps and lustful groans were heard. Clothes ripped as muscular upper bodies and strong equine lower bodies grew out of the people. As more people were transformed into centaurs, the quicker the pheromones spread. The quicker the pheromones spread, the more people transformed, and the cycle continued. Pretty soon, the entire party became a gay centaur orgy of constant sucking, fucking, and riding.