A trophy artifact obtained in battles with Murmur. It resembles a chitinous cocoon with resilient translucent formations that look like the respiratory organs of fish. These formations slightly "open" and absorb oxygen from the surrounding environment. When in proximity to a large living organism, it begins to form a transparent slime with a strong odor on the organisms epithelial surface, which is instantly absorbed into the skin without a trace. Samples of the slime contain microorganisms— a bacterial colony of unknown nature.
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