Stony Devil Spider

Stony Devil Spider or Rocky Devil Spider, a third rank Magical Beast. It was a true master of concealment. It was covered in veined patterns that made it look just like a boulder, making it appear just like part of the background.
Even walking right past it, it would be difficult to notice it. Most terrifying of all was its incredible patience.
Sometimes it would hide for months or even years for prey to show up before it stealthily crept out.
Its movements were extremely light without the slightest sound.
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