First Lord's Fury (Codex Alera, #6)

by Jim Butcher

Though, Varg mused, he was not at all convinced that this Julius person, whoever he was, would have had a very great deal to teach Tavar.

“When I’m finished,” Octavian promised, “nothing will be left of your kind but stories. I will burn your homes. I will bury your warriors.” His voice grew even softer. “I will blacken your sky with crows.”