Necromancer Staff

Tasks:                                               Rewards:
Necromancer Staff - Slot: Artifact                   Necromancer Crown
                                                     Necromancer Cloak
                                                     Necromancer Belt
                                                     Necromancer Staff - Slot: Artifact 
             Dropped from Necromancers or crafted

This item can be obtained by killing Necromancers - an undead minibosses that spawn at night.
 
The Necromancer Staff can also be crafted from other Necromancers drops, Orb of the Summoner, and Bone Handle Necronium