This quest is not available in game.
Aurel Goldleaf at Cenarion Hold in Silithus wants you to bring her 1 Abyssal Scepter. You must also be Honored with the Cenarion Circle.
Ishnu-alah, <race>. Show me proof of the demise of a Lord of the Abyssal Council and I shall reward you with an item that should aid you in your battles against the Qiraji.