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Gourtrum was a nocturnal terror of the ancient world, hunting prey in the dead of night. The fluid leaking from its hollowed-out torso was a toxic substance meant to mark territory and warn rivals and trespassers.

Thanks to its gargantuan jaws, which could shred thick metal plates as if they were paper, it was invincible in the ancient world it once inhabited. Singing in eerie voices, they wander town streets on the night of the new moon.