Legacy: Bound in Sorrow
Complete tiers of the Nightmare Containment public event within the Derelict Leviathan and bind your Vestiges of Dread at the Nightmare Harvester after completing the final tier to create a Bound Presence.
Each additional time you bind after completing the final tier has a chance to reward a Bound Presence.
In order to perform a ritual to sever Calus's connection to the lunar Pyramid, Eris has sent you on a mission to harvest the essence of Nightmares on the Leviathan and beyond. Destroy these creatures and contain their power for her spell.