Weapon of Radiance

You brandish the weapon used in the spell’s casting and make a melee attack with it against one creature within 5 feet of you. On a hit, the target suffers the weapon attack’s normal effects, plus an additional 1d6 radiant damage. 

Whether the attack hits or misses, the next weapon attack against the target of the spell before the end of your next turn may deal additional radiant damage equal to your Wisdom modifier.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the additional radiant damage from the initial attack increases by 1d6 for each spell slot above 1st.