Blazing Sun Blade

You brandish the weapon used in the spell’s casting, infusing it with holy light, and make a melee attack with it against one creature within 5 feet of you. Add your spellcasting modifier to your attack roll (Minimum of 1), and your weapon sheds bright light in a 10 ft. radius and dim light for another 10 ft. until the end of your next turn. On a hit, the target suffers the weapon attack’s normal effects, as well as an additional 1d4 radiant damage.

This spell’s damage increases when you reach certain levels. At 5th level, the attack deals an extra 1d4 (2d4) radiant damage to the target on a hit, and further increases by an additional 1d4 at 11th level (3d4) and 17th level (4d4).