Fan Casting The Flight of Dragons(live action)

The Green Wizard Carolinus summons up his three brothers to help him create The Last Realm of Magic to help preserve all things magical, but the evil Red Wizard Ommadon want to persuade humans to use their sciences and technology against each other so that they can wipe away their own kind from the face of the earth. So Carolinus forms a group a heroes to defeat Ommadon and retrieve his crown. His first pick is Peter Dickinson from 20th Century Boston who is a brilliant scholar but has a love for all things magical and fantasy. Then there is Sir Orrin Neville-Smythe a knight who once rescue Gorbash when he was a baby and gave it to Carolinus and his adopted daughter Princess Melisande whom he sworn that he will marry her when she is older but nows accepted that she has fallen in love with Peter. Then there is the elf Giles and the archer Danielle who later joined the group and Sir Orrin has grown an attraction to Danielle. Will these brave characters be able to defeat Ommadon and retrieve his crown and save magic?