Abyssal Scepter



The Abyssal Scepter is a Kul Tiran artifact.

Background
The Abyssal Scepter is a powerful tidesage artifact. During the Fourth War, the Horde stole it and stored it into the Zandalari treasury. Willing to get it back in order to protect the Kul Tiran fleet from it, the Storm's Wake crafted a fake Scepter which was to be switched with the real one without alerting suspicion.

The Scepter was later used to conceal the advance of the Alliance diversion force in Nazmir, leading to the invasion of Dazar'alor. The Scepter could also create the illusion of an Alliance fleet on Nazmir's shores.

Source
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As a quest objective

 * Gaining the Upper Hand