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Key Sphere of Envy
Essential4★Left behind by the ancient civilization that once thrived here; what it actually does is still unclear, though current research points to it being one component of some enormous device. It carries the sin of envying humanity's prosperity and bringing about its downfall.
Key Sphere of Envy is a item you pick up rather than build.
Details
Max Stack99999999
It stacks up to 99,999,999.
What Key Sphere of Envy Is For
Key Sphere of Envy 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:
