Electrify Weapon

As an action, you can electrify any metal weapon within 60 feet of you. The weapon gains the ability to impart lightning damage to any target it hits, as well as a chance to stun the target briefly. 

An electrified weapon on successful hits deals 1d4 lightning damage on a successful hit. On a successful hit, the target must make a Constitution saving throw DC 5 or be stunned for one turn.

At Higher Levels: When cast using a 1st level spell slot or higher, the new weapon deals an extra 1d4 lightning damage per spell slot level. As well as the saving throw DC increases by +2, capping out at DC 11