The boy stared down at himself, and the audience could see his teen features maturing quickly into those of a young man. However, his face was also getting darker and broader along with his body. A ripple of change flowed out from his now bestial groin, stretching him larger and leaving a thick covering a black hide.
He gasped and arched back as a second ripple added another foot to his height, and pushed his face out into a definate muzzle. It was now obvious that he was becoming some sort of black bovine, with horns pushing from his temples and wide cloven hooves instead of feet.
The third ripple added muscle and height yet again, but now there was almost no human qulaity to the monster the boy had become. He stood upright and had three-fingered hands, but seemed otherwise to be a huge black bull. He stared at himself with huge brown animal eyes that were wide with fear and struggled to speak. "I don' wanna be a mons'er! 'lease! Don' wanna be mauuuuugh. muaaaaaaaaagh." His voice turned to the bellows of an animal as a fourth ripple changed the boy a final time.
His shape didn't seem to alter - but his glossy black coat became dirty and unkempt, his belly and legs stained with old manure and urine, and his eyes dulled over as he calmed instantly and stood on stage twistching his tail.
Madame Ullusia smiled. "Not only have I given him the size and strength he craved, I have altered him so that he has always been this way. This fine specimen of a minotaur has no memory of his puny humny life - he was born a minotaur, grew up as a minotaur, and now has no intelligence, memory, or thought that a born minotaur would not have. He will perform heavy labor for us. Bull is his name now. Go to your new home with the other animals, Bull."
As the former boy shuffled off the stage, Madame Illusia looked over the audience. "Is there anyone else who wants me to change them?"