You somehow get an idea after thinking, and notice the book of mythical creatures she had on her table. Suddenly, you get an idea of which ones you want your girlfriend to become. "Babe, can you become a mythical creature?" You ask, which causes your girlfriend to turn to where she left her book.
"You were looking at my book, weren't you?" your girlfriend asks. "Yeah," You answer. "Sorry, I just thought it would be a good idea." "As a matter of fact, it is," your girlfriend explains. "Mythical creatures are basically my specialty. I can basically turn into anything in this book, well except for the ugly ones. Just let me get ready first." By doing so, you read some of the book, and bookmark the one's you want your girlfriend to transform into, as she gets ready for her it.
"Okay, I'm ready," your girlfriend says, as you turn to find that she was now naked. Your nose bleeds as you notice her like that. "Why did you take off your clothes?" You ask. "My transformations destroy my clothes," your girlfriend answers. "So where should we start?"