Spirit Merchant (technically traded). Each of these marks the exact location of an outer biome boss spawn. Each scanner recipe uses a resource unique to the boss's biome. Either found on the ground or as a mob drop. And I've got a nice dirt patch where I can plunk https://black-myth-wukong-gamepla62738.dailyblogzz.com/30365412/rumores-buzz-em-core-keeper-gameplay