Echo of Regret

You brandish the weapon used in the spell’s casting and make a melee, ranged or thrown weapon attack with it against one creature within weapon range of you. Intense remorse for past and future violence that guilt your mind congeal into an additional facsimile of your weapon, allowing an additional weapon attack to a creature within weapon range. This echo attack uses similar damage dice and modifiers to the initial attack as force damage on a hit. 

At Higher Levels. At 5th level, both the initial attack and echo attack deal additional damage equal to your spellcasting ability modifier. Both attacks' damage increase again by your spellcasting ability modifier at 11th level and 17th level.