You imbue the dagger used as the material component of this spell with an electrical charge. The next successful attack with the dagger discharges the effect, adding an additional 1d6 lightning damage to the attack's damage roll, and the spell ends. Attacks that miss do not discharge the effect unless they are critical failures. On a critical failure on the attack roll, the lightning damage discharges harmlessly into the air around the dagger, and the spell ends.

The damage increases to 2d6 when your character reaches 5th level, to 3d6 at 11th level, and to 4d6 at 17th level.