Sunshine

is a power possessed by the Lion's Sin of Pride, Escanor.

Description
Much of Escanor' power is a mystery. Whether it is a gift or a curse when he was born with such ability, it is shown to be emitting a dangerous amount of light to dispel darkness and slowly burn and melt away his enemy along with anything in his immediate vicinity. It is also greatly amplified by the rising of the sun at dawn, peaking at noon, and severely weakens by night. According to Merlin, it is the source of all life.