Illuminatus is a spell that creates a pink bubble of mana that generates light.
Five years prior to Omniverse
In From Hedorium to Eternity, this spell was used by 11-year-old Gwen to light up Thaddeus J. Collins' house.
In Kevin's Big Score, Gwen used the spell to light up the warehouse.
In Vengeance of Vilgax: Part 2, Gwen used to the spell to light up the sewers in Bellwood.
In Inferno, Gwen used the spell to light up Moldywarp's cave.
In Fool's Gold, Gwen used the spell to light up Mayor Coleman's barn.
In Ghost Town, Gwen used to the spell to light up the sewers on Vilgaxia.
In Ben 10,000 Returns, Gwen used this spell to light up the museum.
Illuminatus means "enlightened" in Latin.