Putting all the souls into the wug could make these souls mutually devour one another to advance them to a higher rank soul. The Divine Machine Clan in those years exploited Soul Wugs to manufacture powerful energy sources for Commander Mechanical Beasts. Otherwise, how could legend say a tenth rank Commander Soul Wug could be found by the Divine Machine Clan. However, this Soul Wug seemed to be somewhat coarse. It was a Basic Grade Magic Tool, in the end manufacturing Fourth Grade souls.
- Soul Wug was Gong Xu's artifact.