The Light of the Soul (Spanish: Luz del Alma) is a type of magic that draws its power from light and hope. It was taught to Oliver Queen by Esrin Fortuna, as a way to counteract Damien Darhk's abilities, related to his control of the Khushu Idol.
Esrin Fortuna was tasked with teaching Oliver how to use this type of magic, but she discovered he had more darkness than light inside him and gave up on teaching him. However, Oliver later used this power against Damien Darhk, after focusing on the memories of hope that his friends on Team Arrow gave him managed to overpower the darkness inside him. This allowed Oliver to protect himself from Damien's magic, forcing the dark sorcerer to flee.
Damien Darhk, after losing his hope of giving his wife a better future through the Genesis project (with Tevat Noah destroyed), re-acquired the Rubicon program which would allow him to destroy the world in nuclear fire. He initiated the launch with the help of Cooper Seldon and led his Ghosts into the city streets, to assist him against the Green Arrow. Oliver was able to channel light magic once again, aided by the belief and hope of the people of Star City, allowing him to defeat Darhk in the final confrontation. 
Powers and abilities
- Dark magic immunity: The user can protect themself against dark power such as life-absorption power of Damien Darhk.
- Darkness: If the user of this form of magic has more darkness than light inside themself, they will only empower their enemy more and will be unable to properly use this type of magic.