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Carnivorous crystals are a species of mindless oozes made out of crystals native to the Plane of Earth. They normally feed on minerals in the surrounding rocks, but can sense living creatures and consider them a delicacy, as eating one allows them to create another carnivorous crystal within hours, instead of years, like normal. An active carnivorous crystal gives off supernatural sonic vibrations. In the deepest caverns of the Material Plane, or in the Plane of Earth, ancient carnivorous crystals can reach immense sizes.1
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