He would exact a terrible vengeance on those who had made him play the fool.
"Cyric has come for me at last, and he shall take a terrible vengeance on you."
They looked for all the world like a heavenly host, come to wreak a terrible vengeance.
He had to see Eve, to talk to her, to make sure she was not plotting some terrible vengeance against him.
She vowed a terrible vengeance upon me and now it has come.
Now they, too, rushed forward, seeking a terrible vengeance.
The black mist is angered, and it will take a terrible vengeance.
But a day was to come when the brothers, alike outraged by their father, would plot and carry out a terrible vengeance.
"And why should a terrible vengeance-" He had no chance to finish.
Unless she too had got away in the darkness and confusion they would inflict a terrible vengeance on her.