The Heroic Soul Army, which was a combination of mage projections and knowledge creatures.
No one knew why the mage projections from the Time Continent were mingled with knowledge creatures.
Even the most adept Spirit Mage, who excelled at enslavement, could only control one or two knowledge creatures for a brief period. However, to dominate and command a large group of knowledge creatures was far beyond the capability of any Two-winged Mage. It's akin to letting a child drive a heavy-duty truck; it's physically impossible for them, and if they somehow managed to do so, it would not be due to the child's ability but rather the truck's compliance.