Defense by Offense

Unfortunately the missive you intercepted indicates that House Uthorin already acquired the Arkaneth spy's plans. They are readying their assault, and the best chance for the Asur to hold the Unicorn Gate is if we acquire their plans and counter them. The missive indicated that the assault on the Unicorn Gate is to be led by Jaerys Shadowcleaver, an executioner of Har Ganeth noted for his cruelty and arrogance, though I suppose that is a little redundant. Slay one of our foes on the battlefield and pike their skull below the Druchii warcamp at Oath's End. The message sent will be clear. Goat Shadowcleaver into battle and acquire their battle plans.

Kill a Dark Elf player and take their skull. Pike it north of Oath's End on the ramp leading to the warcamp.