Sword of Light

While you wield one Melee weapon the weapon shines with bright light in a 20-foot radius and dim light for an additional 20 feet. The light can be colored as you like. Completely covering the weapon with something opaque blocks the light. The spell ends when the hand is no longer touching the weapon. 

While the weapon is enchanted with the sword of light it does an additional 1d8 damage to evil creatures if the weapon strikes the creature.