With Hero Forge I'm bringing out a Minotaur transformation story, fitting for Halloween.

Gareth is a skinny young adult who has no luck with the girls. His great passion is ancient mythology, he particularly loves Greek Mythology. One of his favorite stories is that of the Minotaur, a half-man, half-bull creature with an appetite for human flesh (although cattle are vegetarians, but in the world of myths, fairy tales and legends, anything is possible).
He thinks it's great that the Minotaur is sometimes described as a monstrous villain and sometimes as a tragic figure. What he particularly likes about the Minotaur is that it is depicted as a huge mountain of muscles. He wants to dress up as a Minotaur for Halloween, but doesn't have the money or materials to do it.
But before Halloween Night really started, he finds a box in front of the door of his parents' house with a letter attached to it.
The letter said the following:
"Dear Gareth, you simply deserve a nice Halloween. The Red Stone is a Halloween wish stone that only appears once a year. He grants everyone's wish, but it lasts until sunrise. Hold the stone in your left hand and say your Halloween wish to the stone. Don't worry, there are no catches, no tricks and no traps. Everything is safe and great fun. As soon as sunrise hits, not only does the wish expire (perhaps you still have a blessing left), the stone then disappears and doesn't appear again until the next Halloween. Happy Halloween! Signed, a benevolent friend."
Gareth actually found the stone in the box, which was more of a ruby.
Full of joy, he went to the back garden and set about making his Halloween wish. "Oh you great stone, grant me my Halloween wish! I wish to become a Minotaur!"