A while back I combined book 1, Dawn of the Sacred Land and book 2 Guardians of the Sacred Land into one omnibus edition and renamed it Dragons of Destiny. It was my plan to combine books 1&2, 3&4, and 5&6 into three omnibus volumes and do away with the six individual books. I'm sorry it became confusing to some. I thought fans would like the cheaper trilogy of omnibus editions rather than 2.99 per book, but I was wrong. Fans hated the idea and wanted the 6 books instead. So, I discontinued the omnibus editions. If you read Dragons of Destiny, you should read book 3, Exiles from the Sacred Land next.
In the future, when I have completed the final book, I will have Omnibus editions again but I will make it more clear what books they contain and I won't rename it.
Mark E Tyson