Quenching the Blade
Travel to the Scalding Pools located near the top of the Hand of Gul'dan and use the Forged Illidari-Bane Blade to quench it in the lava pools. Once you have the Quenched Illidari-Bane Blade, return to David Wayne at Wayne's Refuge.
The blade is nearly finished!$B$BYou can almost feel the magic beginning to coalesce inside the steel, but one thing remains to be done.$B$BYou must take the forged blade to the Scalding Pools near the top of the Hand of Gul'dan in Shadowmoon Valley and plunge it into the lava pools to quench the sword. When you have quenched the sword, return.
Required Level
70
Side
Both
Recommended Level
70
Difficulty
74
77
Start
End
Locations
Hearthing...
Progress
Have you quenched the sword in the lava of the Hand of Gul'dan?
Completion
Well done!$B$B$B$BI'd say it's a fair improvement over the crude Legion weapons you started with. Not only will this blade cut down Illidari demons, but it will work against the Legion's minions as well.
Rewards
You will be able to choose one of these rewards:
You will also receive: 4 
40 
13 88
Gains
Upon completion of this quest you will gain:
- 15800 experience