The challenge here was to get this dragon bursting from the pages of the book. I did two animation sequences that blended together at the point where the dragon tears through the paper.
The first sequence was rendered to a separate buffer and projected onto the page and at the point of impact the second one appeared from underneath the book. The page flutters and tears disguise the effect.
We also had other components to ensure that wherever the book was held by the user the dragon would still end up at the correct position onscreen to spray fire across the pages. This was keyed like a regular Maya Parent Constraint.