The Doomstone (quest)

Objectives
Collect the Doomstone. Provided item: Elemental Nullifier
 * The Doomstone

Description
At the core of is an artifact known as the Doomstone. One of its properties is an ability to absorb a great deal of energy.

This is how the cultists are trying to set off the explosion... by overloading the stone and amplifying the power through the elemental.

Bring me the Doomstone. For safe keeping, of course.

("Get the Doomstone from Animus!")

Rewards
You will also receive:

Progress
Do you have the Doomstone, ?

Completion
Surprising... you lived.

I thank you for doing my dirty work,. You kept my hands clean while ridding me of some incompetent Grimtotem leaders.

And not only do I have the Rattle of Bones, the Writ of History, and the Drums of War, but I now have the ultimate artifact: the Doomstone!