Carnivorous Crystal

Rare natives of the Elemental Plane of Earth, carnivorous crystals feed on minerals and metals, transforming them into crystalline substances. They can alter flesh in a similar way and then consume it, but carnivorous crystals are predators only in the sense that an amoeba is, as these creatures are both mindless and indiscriminate about their prey. They reproduce through fission, but only very slowly and in areas with ample food.
Amoral technomancers capture carnivorous crystals and implant them with magitech that stimulates the creatures’ aggression. The agitated oozes are confined to breakaway containers, which allow them to be dropped safely into enemy territory. The augmented oozes then kill any fleshy creatures in the vicinity. This magitech burns out in a few days, so the creatures can either be recovered for further use or left in their new homes. This practice means carnivorous crystals can be found in unexpected places, such as abandoned space stations, derelict freighters, and planetoid mines.