Leona's spells charge any enemy unit damaged with Sunlight for 3.5 seconds. When allied champions deal any damage to those targets they consume the Sunlight debuff to deal 20 - 140 (based on level) additional magic damage. This additional damage is counted as the ally's damage and it will benefit from their magic penetration. Leona is unable to activate the additional damage herself.
Active: Leona gains bonus armor and magic resistance for 3 seconds. When the effect ends she deals damage to enemies within 275 range of her. If Eclipse damages any enemies, the bonuses remain for an additional 3 seconds.
Active: Leona calls down a beam of solar energy to a target location. After a brief delay, it deals damage to all enemies within 250 range and slows them by 80% for 1.5 seconds. Enemies within 100 range are stunned for 1.5 seconds instead of slowed.
For the duration, the beam also grants vision in a radius of 350.