In the upcoming patch there is a new quest for Necromancers and Shadow Knights, the reward is
Corrupted Hammer of Consternation, a Harmshield Procing 1hb weapon. There is a side benefit with this quest addition for Paladins and Clerics wanting their DA Hammer,
Divine Hammer of Consternation. Praetorian Myral who drops it will be reduced to a random 40m-8h? re-spawn instead of his normal approximately 2 day re-spawn.
Not sure if there is a level requirement, but I think anyone like level 65+ can to do this without trouble.
Head over to Grieg's End and you will need to kill Praetorian Myral (as indicated by

on the map), you will need the
Scythe of Sundering (Optional- you only need it if you know no one with it that can proc it and turn in the Flesh to spawn the shade for you) and
Divine Hammer of Consternation from him. You can tell what he will drop as he will equip and display both of these weapons.

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With the Scythe of Sundering you will need to melee proc it on mobs until you have up to 4x
Chunk of Flesh, gotten from procing the scythe. (Optional- you only need it if you know no one with it that can proc it and turn in the Flesh to spawn the shade for you)
After this head to the fleshless bones in Mons Letalis (as indicated by

on the map). This is inside the underground cave part.

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Turn in the 4x Chunk of Flesh to the fleshless bones. This will spawn a shade npc, turn in the Divine Hammer of Consternation to it and you will be given the Corrupted Hammer of Consternation.