Yarzill the Merc

From WoWWiki

Yarzill the Merc is a level 70 quest giver located at the Dragonmaw Base Camp in the contested territory of Shadowmoon Valley. Although he appears at first to be a run-of-the-mill goblin mercenary, he is in fact a nether dragon in disguise. Yarzill the Merc is friendly to players who have completed  [70] Blood Oath of the Netherwing.

After completing  [70] Lord Illidan Stormrage, Yarzill provides the player an escape from the enraged Overlord Mor'ghor.

He starts the following quests at neutral reputation with Netherwing:

•  [70] Your Friend On The Inside
•  [70 Daily] A Slow Death
•  [70 Daily] The Not-So-Friendly Skies...
•  [70] The Great Netherwing Egg Hunt
•  [70] Accepting All Eggs (repeatable)

See List of Shadowmoon Valley NPCs.