Final answer:
The author might have chosen the words 'conjuring up' over 'producing' because it adds a sense of magic and mystery to the text, while also serving as a metaphor for creativity and imagination.
Step-by-step explanation:
The author might have chosen the words 'conjuring up' over the word 'producing' because 'conjuring up' adds a sense of magic and mystery to the text. This choice of words helps to create a shadowy and mysterious mood for the reader. It also serves as a metaphor for creativity and imagination, enhancing the overall theme of the text.