Contract of sensory clouding is a contract used to challenge Yama to a more difficult fight for the left piece of the purifying sigil. It can be dropped by Yama himself through opening dossiers, or via black, greater, and lesser demons in the Chasm of Fire.
Magus vestige β
A bit sad that the ring of wealth barraging aera ends here - tooth and loop halves you will be missed but yet ANOTHER gear upgrade I am really happy about! π