Twilight's Hammer (mace)




 * Chaos and madness will consume any who seek to harness its power.

The Twilight's Hammer, also known as the Hammer of Twilight, is Cho'gall's weapon during the Bastion of Twilight raid. Forged with elementium and the power of the Old Gods, the hammer was forged as a symbol of the Twilight Hammer cult's power during the Twilight Highlands storyline.

It is a 1-handed caster mace.

Source
This item drops from Cho'gall in the Bastion of Twilight.