Rokad the Ravager is a level 73 named elite darkhound in the Servant's Quarters in Karazhan. The Servant's quarters are located immediately to the right after you enter the instance from the main entrance. Rokad only does straight up melee damage on the main tank, but does so a lot (about 1800 damage). The encounter is a straightforward tank and spank fight. Clearing the area requires the raid to kill around 50 mobs worth 15 Violet Eye rep each. With reputation from the boss, this adds up to about 1000 Violet Eye reputation.