Lux

Luxanna Crownguard hails from Demacia, an insular realm where magical abilities are viewed with fear and suspicion. Able to bend light to her will, she grew up dreading discovery and exile, and was forced to keep her power secret in order to preserve her family's noble status. Nonetheless, Lux's optimism and resilience have led her to embrace her unique talents, and she now seeks to bring greater tolerance and understanding to her homeland.

Source: https://universe.leagueoflegends.com/en_US/champion/lux/