Looted from shades.
Returning three shadow essences to the research table grants a permanent damage bonus to demons, plus XP and Influence.
- Once the initial three shadow essences have been handed in to the research table, it is possible for further hand-ins to continue generating XP and Influence. Each subsequent hand-in (whether single or multiple essences) will grant 406 XP and 150 Influence with no perks or 1,006 XP and 375 Influence with the Enhanced Studies perk. This has been known to occur 6+ times in one playthrough.