Sludge-Covered Object

Sludge-Covered Object is dropped from Black Bloods of Draenor and Draenor Blood Terrors in the Netherwing Mines of Shadowmoon Valley. After achieving reputation with Netherwing and completing the quest The Netherwing Mines, Sludge-Covered Objects have a substantial chance of containing the Murkblood Escape Plans, which start the quest The Great Murkblood Revolt.