When the plot-skips players into the game world - Chapter 48 - 29 Forbidden Technique - Nurturing Skill_2

... e Finder" to randomly arrange instances, and Phantom Demons couldn't infinitely respawn like the bosses in the instances. So he could only feed them corresponding rare materials to level up the Phantom Demon—which required a huge cost, and collecting materials also took time and energy.

But if he had the "Shepherd's Nurturing" skill, he could use himself as fodder, sacrificing to the Phantom Demon.

Aiwass's oath was "I will not use the lives or corpses of my own kind as ritual ma ...