The Zandalari Juggernauts in ZA/ZG have the ability to cause an Earthquake with a melee swing. This is spellstealable by mages and increases DPS by a fair amount if the tank keeps it tanked on top of the earthquake. We tested this in ZA today with the Juggernaut on the pull before Dragonhawk boss with this Earthquake ability our mage was able to apply it under the boss and carry on with his normal rotation and it increased his dps by quite a large margin.