Nightbane (quest)

See Nightbane quest chain for a summary of this quest chain.

Objectives
Go to the Master's Terrace in Karazhan and touch the Blackened Urn to summon Nightbane. Retrieve the Faint Arcane Essence from Nightbane's corpse and bring it to Archmage Alturus.
 * Faint Arcane Essence

Description
You have fulfilled your end of the deal. I will now bind your essence to that of the dead blue dragon.

There is an urn in the Master's Terrace, should you touch that urn, you'll now release its energy and bring life back to the charred remains of Arcanagos. Defeat the creature and retrieve its essence immediately! You will need to take it to Alturus.

Should you fail, the stars predict you will have let a great terror loose upon the skies.

A terror known as Nightbane!

Rewards
You will also receive:
 * 12,650 XP
 * +3,000 reputation with the Violet Eye

Progress
What news do you bring, ?

Completion
This is astounding! Not only have you brought back Medivh's Journal, but you've also retrieved a fragment of his very essence.

As faint as this lingering essence is, it will reveal to us vital information about Medivh. We will not forget this,.