Khalifa took a big gulp of air nervously and tried his best to calm his nerves while trying to envision the feeling of the character in the script.
He looked at the director and all those on set and repeatedly told himself that they didn't exist.
That's right!
In his mind.... he was now Merlin, who was currently heading towards Camelot.
Right now, they are about to film the beginning part, which was Merlin basically walking along a forest trail toward Camelot.
And while he walked, a dragon (narrator) had to talk over the scene.
For this part, for all dragon scenes in this TV series.... one would only hear the dragon, and see a glimpse of its body, like its tail and so on.
But they would never see the full-body, as Baymard didn't have the technology to make it seem that the dragon's mouth was moving on its own yet.
In short, the plan was to make fake dragon parts and have people shake them if the dragon's voice was angry or not.