First, a link to the kickstarter; City Builder. With that done we can go on to a look on the magick of entertainment, that being chapter 3 in the book.
Probably the most noticeable of the magicks in a fantasy setting, the dweomers of the entertainment realm are probably the most misunderstood. Indeed, in most cases where magick is credited it is not actually used, while where not credited it really should be.
For the most part where magick is used it is used to draw the attention of the audience to what the director and performers want them to pay attention to. The goal here is to keep the viewer so busy paying attention to the one thing, so he doesn't really have the time and energy to focus on a flaw. And in large part the magick of entertainment is involved with illusion and phantasm, though not to the point the audience becomes suspicious.
For that is the purpose of magick in entertainment, to engross the audience and to keep them engrossed. To keep them so entranced by what they see and hear they haven't the time to notice the flurry of activity going on backstage.
And part of the illusion is the illusion of being somewhere else. Instead of being seated in the loge of a theater, of standing at the edge of a bluff watching as Vargaardian bison migrate from the northern plains to the southern so as to avoid the bitter cold coming with winter. Or, for that matter, instead of standing at the railing of a fence separating them from a herd of springbok, actually being on an Afrikan veldt with the animals under observation.
Then there are times when magick is used to reassure the animal in an enclosure, such as a zorilla (Afrikan skunk) kept unaware of the people watching her so that she does not become stressed and hide.
Though probably the most important use of magick in entertainment has to do with medicine. For there are times when a performer needs to be able to perform for all that he suffers from an injury that would otherwise impair him. Or an animal may need healing so he won't make the original injury worse, as may happen with an equid or certain types of small birds.
As you can see magick plays a huge role in entertainment, and quite often young dweomercræfters often gain their first employment at a zoo, theater, or circus casting. That's my esssay on the magick in entertainment, coming up on professional places.