Merithra of the Dream
in the Temple of Ahn'Qiraj
will create Elementium Infused Armaments for you should you bring her [Imperial Qiraji Regalia]
and 3 [Elementium Ore]
Arygos theorizes that the element which is born of conflicts between the Old Gods and their minions is also extremely deadly to them under the right conditions. I speak of Elementium, mortal.
Find and bring me Imperial Qiraji Regalia and the toxic element and I shall infuse weapons of great power.
You will strike them down and free us of these bonds.
Use the item well, <name>. Let them feel the pain that they so dearly wish to inflict upon others.