Minor Treasure—Weaponised Ruthusk Lantern!
Ruthusk was a compound mineral produced through a mixture of Rutham and tusk bone powder, specifically sourced from tusks of Ruvva's Empyrean Tusk form. It was the first compound mineral she turned into a Minor Treasure.
The reason was simple: It was the easiest way to gain a Minor Treasure that could serve as an extension of her body.
Mystic Humans could treat their body as a Spirit Weapon. Using the Mystic Human Stamp, Ruvva had the means to refine the tool of Virala's Mystic Ewworm form into a Minor Treasure.
Originally, she wanted to do it for tusk bone powder, for that would give her tremendous benefits. However, the moment she saw its tool version, she refrained from proceeding ahead with it.
