Destroy 10 Lost Spirits and 10 Broken Skeletons, and then speak with Soolaveen at the Refugee Caravan in the Bone Wastes of Terokkar Forest.
Many spirits of the draenei were corrupted by the explosion of Auchindoun. Now they wander the wastes in torment.
[player], I beseech you to put them to rest. Destroy the lost spirits and broken skeletons that haunt the Bone Wastes beyond Auchindoun's walls.
What? You think leaving them to wander in blind agony would be better?
Afterward, return to Soolaveen at the Refugee Caravan and tell him of that which you have done.