The Mechnomancer

The Mechnomancer has a body drop, the power cell, that's the key to the Clockwork Menace Factory. To spawn the Mechnomancer, head to the Mechnomagia Retrofitting room. Clear the room, and a ring event will start. Four rounds of two Activated Clockwork Workers (54^^^ Heroic) will run down the ramp from the room above. Kill each round in turn, and finally the Mechnomancer (55^^^ Heroic) will run down the ramp with four A Klakdyne Eliminator M (54^^^ Heroic).