"Shepherd Of Fire" is the second single off of Hail to the King, the sixth studio album from American heavy metal band Avenged Sevenfold. Released on November 7, 2013, the song was a No.1 single on Mainstream Rock, and is the theme song of the Call of Duty: Black Ops II Zombies map "Origins", included in the final downloadable content compilation named Apocalypse.It is also featured in the mixed-martial arts video game EA Sports UFC.