If He Cannot Be Turned
Defeat General Lightsbane and then report your success back to Thassarian aboard the gunship, The Skybreaker.
Death knights, such as General Lightsbane, are held on too tight of a leash to be able to be turned from the Lich King's will except under the most extraordinary circumstances. The general keeps himself within the vault overseeing the creation of new weapons. Disturb one of his weapon racks at the northern forge and I assure you, he will come. I'll send Vile, Lady Nightswood, and The Leaper in to help you. If we are to finally own The Shadow Vault, General Lightsbane must fall!
Required Level
77
Recommended Level
80
Difficulty
77
84
87
Start
End
Side
Alliance
Locations
Progress
I ask you, <Name>, why would we be speaking again if General Lightsbane yet exists?
Completion
General Lightsbane and his forces are defeated? The Shadow Vault is taken?
You will receive: 14 
80 
31 33
Gains
Upon completion of this quest you will gain:
- 27550 experience