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Key Sphere of Gluttony
Essential4★An artifact from the ancient civilization that once thrived on these islands. Its purpose is still unknown, but researchers now suspect it formed part of a far larger machine, and it bears the sin of devouring the lifeblood of the stars while never reaching satiety.
Key Sphere of Gluttony is a item you pick up rather than build.
Details
Max Stack99999999
It stacks up to 99,999,999.
What Key Sphere of Gluttony Is For
Key Sphere of Gluttony is what the quest "Gathering the Key Spheres" asks you to bring — that is the reason it exists, and why holding on to one is worth more than selling it.
Alternatives and Upgrades
Other items at a similar tier, for when you want to weigh this against the rest of its class: