Arechron at Telaar in Nagrand wants you to kill Ortor of Murkblood.
These invasion plans were written by someone I once knew. Ortor of Murkblood, once a noble Broken, versed in the way of the elements, now a muck addled yes-man of Musel'ek the bog lord.
The plans state that they have taken over an orc village northwest of here known as Sunspring.
Travel to Sunspring Post and rid the world of Ortor of Murkblood. What you do, you do for the good of us all...