Epitaph

Epitaph is a dagger in the city of Eschaton. After being carved out of the Keeper of the Bloodwell's chest by Storm, it was handed over to Malcolm in exchange for information about Artephemos.

History
Before the Co-Workers' arrival in Eschaton, the dagger commonly known as Epitaph was protected by a glabrezu known as the Keeper of the Bloodwell. The dagger, which was kept within the Keeper's chest, played an unknown role in maintaining Apollyon's dominance in the Abyss.

The Co-Workers
While the Co-Workers were sent to the Abyss to recover an item from Schreber's rival Artephemos, a tiefling going by the name of Malcolm approached them with an offer to help in return for stealing Epitaph from the Bloodwell. The Co-Workers completed the task, slaying the Keeper, and returned the weapon to the tiefling.

Aftermath
Several months after stealing the dagger from the Bloodwell, the Co-Workers revealed their part in stealing Epitaph to Schreber. Accodring to Schreber, Apollyon's iron grip on the Abyss had weakened ever since Epitaph went missing and ended up in the hands of her rival, the Demon Lord of Lies, Malacoda, whom he suspects was disguised as the tiefling contractor.

Abilities
The abilities of Epitaph are unknown, however, it was confirmed to be magical by Tazio. Epitaph is known be attunable, requiring a humanoid blood-sacrifice to fully connect with the weapon.