Black Rook Breastplate

Black Rook Breastplates drop from the following undead night elves at Black Rook Hold in Val'sharah:
 * Black Rook Spectral Officer
 * Reanimated Archer
 * Risen Soldier
 * Starlys Strongbow
 * Trelan Shieldbreaker

As a quest objective

 * ...And the Anvil