Artifact is the eighth entry in the Sitri Center arc of Deep Dream State, a desire horror audio drama from Neural Nets and Pretty Patterns, and the entry where the Institute's ancient architecture stops being subtext. Meg Aerin and Tessa Finn recruit Oona Reyes, a prisoner with the ability to anchor multiple minds into a single shared dream, who's already dreamed the corridors they've been tracing and knows where Ur is. Inside the shared dream, Nyra runs the nin-dur device with the precision of someone who's been managing this operation for considerably longer than the Institute has existed. The Naditu Empire never ended.