"He called his prime minister, a man greatly feared throughout the realm and often called The Eliminator. No one was certain how the prime minister got the moniker, for rumors and whisperings were often exaggerated. However, it seemed like when he spoke, people woke up dead."
Is it hyperbole or an idiom? I can't find it.
Thank you for your help.
It's not an idiom that I have heard, but it is almost certainly hyperbole.