When I first had ideas for writing a magical fantasy set in the Old West, I considered several options for how far to go with the fantasy elements. I could add wizards to the social fabric and call it good, or I could add fantasy races and creatures as well. I decided to do it all.

I’ve read many forum discussions about whether or not fantasy writers should include classic races such as elves or dwarves. Some people are bored with them while others can’t get enough. The bottom line for me is...