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 and must make Constitution saving throw.On a failure,they are blinded until the start of your next turn.

at higher levels

At 5th level,the triggering attacks deals an extra,1d4 radiant damage.At 11th level,this increases to 2d4,and at 17th level,it increases to 3d4.