Murussu

A monster from the Macalania Woods in the faraway world of Spira. The murussu's body is completely covered in solid rock, making it very difficult to inflict significant damage upon it. Although there are various types of helm monsters in Spira, those sprouting stones from their entire bodies are extremely rare. It is unknown whether or not it gained this trait due to the circumstances of its environment, as the Macalania Woods are known to shine with blue crystals of their own.