Lumos Duo
From Harry Potter Wiki
Lumos Duo is a spell that creates a light connection between the wand and an object. It is a variation of Lumos that can only be learned by Ron Weasley in the Harry Potter and the Prisoner of Azkaban video game. Casting the spell causes an extra-intense beam of light to emit from Ron's wand, forcing hinkypunks to turn solid, and ghouls to retreat.
