You gain the following benefits.
You have Immunity to Radiant damage.
When you hit a creature with a weapon attack, the damage can be Radiant or the weapon's normal damage type (your choice).
Once per turn when you hit a creature with an attack that deals Radiant damage, you can emit Bright Light in a 30-foot radius from yourself and Dim Light for an additional 30 feet until the start of your next turn. This light is sunlight.