Taskmaster Varkule Dragonbreath is a level 73 quest giver located at the Dragonmaw Base Camp in the contested territory of Shadowmoon Valley. He is friendly to players who have completed 
[70] Blood Oath of the Netherwing.
He starts the following quests:
[70 Daily] Nethercite Ore (neutral, Miners only)- [70 Daily] Netherdust Pollen (neutral, Herbalists only)
- [70 Daily] Nethermine Flayer Hide (neutral Skinners only)
- [70 Daily] Netherwing Crystals (neutral)
- [70] Rise, Overseer! (friendly)
- [70] The Netherwing Mines (friendly)
- [70] Stand Tall, Captain! (honored)
- [70] Hail, Commander! (revered)
- [70] Bow to the Highlord (exalted)
See List of Shadowmoon Valley NPCs.