To get this item you have to go to 66.30 31.54. There will be a green and a red circle. To summon Warlord Gurthan, the quest mob that drops this item, someone has to stand on the green circle and do /lie and another person has to stand on the red circle and do /kneel.
After you do it he'll yell: "You wish to pay me tribute? Then pay it with blood!"
He summons some stone dogs but this guy is easy. After you kill him, collect his loot. He can be tagged by everyone and this item can be looted by everyone.
One of the three hidden random daily quests for the Klaxxi.
Kypa'rak's Core, The Warlord's Ashes, and The Matriarch's Maw.
The mob is only up the day dailies are open near the Terrace of Gurthan. It gives 130rep.