He was definitely older - the enormous sexual equipment that caught his attention first was proof of that. It was dark and looked more like a horse or donkey's male parts than that of a human, but he was pleased by the size and shape. When he tore his gaze away from his crotch, he saw long, muscular legs that were filthy, and feet so caked in mud and horse manure that he could hardly make out the toes. Scrambling up, he went over to the magical mirror Llandros had created. The young man staring back at him was perhaps 18, very lean and muscular, unwashed and filthy, and also ugly and dumb-looking. A mop of matted, greasy hair hung down over large ears and a low forehead, and thick, protruding eyebrows jutted out over wide-set, dull brown eyes. His lower face protruded out, giving him a very apelike appearance - possibly what a Neanderthal might look like. His teeth were scummy and too big, but looked strong and healthy.
"You definitely have a good look for a stableboy." He turned to see the boy wizard grinning at him. "I bet you know how to take care of horses and donkeys."
Mike grunted and nodded, grinning as he realized he had full knowledge of the care and feeding of animals, how to polish and oil tack, and otherwise be the perfect stable hand. Other things were missing, though. He could not remember how to read or write, and he would be lost counting without using his fingers. He did not mind. He was a stable boy, and knew everything that was important. He grunted at the mirror again with another grin, then shuffled off to start mucking stalls. The adventure, his being a centaur, even his life in his own world, was fading from memory. Mike's new limited intelligence was pushing all that useless information out. he was happy as a stableboy, which the magic would make sure he remained forever.
Llandros smiled in satisfaction, then tried a spell. As he expected, it worked. A few minutes later, a well-dressed young man in green wizard's robe strode out of the stable and into the night.