The Cudgel of Kar'desh

The Cudgel of Kar'desh is obtained inside the heroic version of the Slave Pens in Coilfang Reservoir. Completing it requires the defeat of both Nightbane, inside Karazhan, and Gruul the Dragonkiller.

The quest was originally required to gain attunement to Serpentshrine Cavern.

Objectives
You will need:
 * Earthen Signet
 * Blazing Signet

Description
Bring me the elemental signets that the cudgel requires!

The Earthen Signet is held by Gruul the Dragonkiller. Gruul can be found inside his lair in the Blade's Edge Mountains.

The Blazing Signet is the blazing heart of a creature known as Nightbane. This mythical beast is said to reside in the hallowed halls of the prophet, Medivh.

Make haste!

Rewards
You will receive:
 * The Mark of Vashj
 * The Mark of Vashj

Progress
With the cudgel reformed, I shall break free of my bonds and return to Serpentshrine to exact vengeance on Vashj and her minions.

Completion
At last!

I have not forgotten our agreement, mortal. You too will now be able to enter the lair of Lady Vashj. Now leave me! I have much to plan.

Progression

 * 1) The Mark of Vashj (quest)
 * 2) The Cudgel of Kar'desh