Crackling Smite

The next time you hit a creature with a melee weapon attack during the spell's duration, the attack deals an extra 2d6 lightning damage to the target. Until the spell ends, whenever another creature within 5 feet of the target is hit with a weapon attack, you may choose to have that creature take lightning damage equal to your spellcasting ability modifier. Any creature within 5 feet of the target, including the target, may use its action to make a dexterity saving throw to ground the target and release the charge, ending the spell on a success and taking damage equal to your spellcasting modifier on a failure.