Use the Naturalized Ammunition to take control of the Death's Door Fel Cannons. Use the cannons to destroy both the South Warp-Gate and the North Warp-Gate.
Now that the ammunition can affect the Burning Legion, it's time for you to use it.
There are two warp-gates, which are used for teleportation and enhancement of the void terrors. One is in the south and the other in the north, and each is within range of a fel cannon.
Use the naturalized ammunition to take control of each fel cannon and destroy the warp-gates.
Attack the gate with artillery to begin, and be prepared to kill its defenders to keep the cannon alive if necessary.
Also, you get: 3 90
Have you destroyed both of the warp-gates yet?
Your prowess is staggering!
Very well, with the warp-gates out of the picture, there's only one thing left to do.
Upon completion of this quest you will gain: