Electrify

You channel lightning into your hands. After casting this spell, if you deal damage with a touch attack, an unarmed strike, a melee attack made with a metal weapon, or successfully initiate a grapple during the duration of the spell, the target must make a Constitution saving throw. On a failed save, the target takes 1d12 lightning damage and becomes stunned until the start of their next turn. On a successful save, the creature takes half damage and suffers no other effect. The spell ends after dealing damage.

For the duration of the spell, you can cast the cantrip shocking grasp as the same class as this spell.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d12 for each slot level above 1st.