There was a saying that circulated among intelligent creatures, despite the little information that went from empire to city, and city to village.
'Kneel under the presence of a dragon.'
Most people have never seen such a mythical creature. In fact, there are some that simply believe dragons are things of legends. However, they were very real. They were widely known for the pressure their very existence created.
As such, there were people that tried to replicate this pressure. In the majority of circumstances, these people would either be of high status and could afford such research, or were intelligent enough to do research on their own.
The attempts were numerous, but the number of failures was nearly equal. Despite the ability many possessed, hardly anyone could replicate the mythical pressure emitted from a dragon.
...But those that succeeded, created something terrifying.