I farmed for a bit today and now on Ayrn I can do
[wowitem]28277[/wowitem]
Mats are:
[wowitem]22449[/wowitem] x4
[wowitem]22456[/wowitem] x8
For you enchanters who want this, its the Voidshriekers in Netherstorm at Manaforge Ultris that drop it, no other mobs.