Thread:Per Ankh/@comment-24588058-20170604052239/@comment-3270170-20170612034541

Attack on Titan artifact... that would BLOW the Warehouse's Masquerade WIDE open! We would NEED the Masquerade reinforcer artifact just to contain it-and we still haven't made one.

As for the Death Note... the artfact would be a simple notebook. If you write a person' name on it, along with a cause of death and time of death, they will die how and when you specify. Otherwise, they die on the spot of a cardiac arrest. Leads to a corrupted sense of justice and vigilantism.

The Ghost Rider's chain is a good possibility.