Defeat Taken to imbue the talisman with the Darkness you need to open the doorway to the Dreaming City.
Defeat Taken to imbue the talisman with the Darkness you need to open the doorway to the Dreaming City. Vanguard intel indicates that you can find Taken on Io and in the Sludge in the EDZ, as well as in strike "Lake of Shadows" and in Gambit.