For a brief period in its history, Darksteel Tower was ruled by a vicious coven of surface-roaming drow. From shadowed alcoves, high priestesses stood guard over the tower by night and day, wrapping their sensitive skin in swaths of black cotton. When Harpers finally destroyed the nest, these huge and ominous shields were all that survived of Darksteel Tower. Neither the blades nor magic of the Harpers could dent them.