Harvesting the Fel Ammunition

We must shut down the Burning Legion's access to Death's Door, but first you're going to destroy their two warp-gates! The problem is, we can't even scratch one of those things, so you're going to need to use their own weapons against them. The death's might, death's watch, deathforge over-smiths and deathforge technicians carry the ammunition for the fel cannons. Normally it wouldn't affect any of them, but if you bring the cannonballs to me, I will imbue them with Nature's unbridled wrath!