Mehmed III Adli was sultan of the Ottoman Empire from 1595 until his death.
Mehmed III remains notorious even in Ottoman history for having nineteen of his brothers and half-brothers executed to secure power. They were all strangled by his deaf-mutes.
The holder develops a desire to murder their siblings, and eventually causes a lethal fever. The artifact is activated through contact with the victim's sibling, and cutting the cord is the only way to reverse its effects.
Artie sent this artifact from the Warehouse to Tracy Bering, to try to kill Tracy and Myka.