Stop the Ascension! (Horde)

Objectives
Present the Vrykul Scroll of Ascension near the Thane's Pyre to call him out and slay him. Afterward, due to the nature of the ritual, you're sure that Greatmother Ankha at Camp Winterhoof will be interested in seeing the scroll. Provided:
 * Halfdan the Ice-Hearted slain
 * Vrykul Scroll of Ascension

Description
This huge scroll is made from dragon skin. Unfurling its more-than-ten-foot length, you can see that the images painted upon its scaly surface depict a mysterious vrykul ritual.

A vrykul thane, surrounded by angelic-looking beings, ascends into the heavens. A mysterious, darkened figure looms large in the picture's background.

A tingling in your gut tells you that the thane of Skorn is about to do this. You must stop it! A large pyre sits at the top of Skorn in front of the thane's lodge.

Rewards
You will also receive:

Progress
Yes? How may I help you, child?

Completion
Yes, that is ominous-looking, and you obviously had the right of it.

Thank you for bringing this scroll to me. I will study its implications. If I were to hazard a guess, I would say that these vrykul have a way to transcend death; at least those that are worthy.

By defeating the Winterskorn thane, you proved him unworthy. Who knows what he would have become, and what terror he might have rained down upon us, had you not slain him?