Electric Boogaloo

Make a melee spell attack aganist a creature within range. On a hit the creature takes 2D12 + your spell casting ability modifier lightning damage and must make a constitution saving throw. If failed, roll a D6 and the creature will be subjected to one of the below conditions untill the start of your next turn based on the number rolled. On a successful save, no additional effect. You have advantage on the attack roll if the creature is wearing Medium or Heavy Armor or if the creature is a construct made of metal. Such creatures will have disadvantage on their saving throw as well.

D6 : Condition
1-2 : Incapacitated
3-4 : Restrained
5-6 : Paralyzed

At Higher levels.  When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1D12 and the spell can target an additional creature for every two slot levels above 2nd. Make an attack roll separately on each additional creature and Roll a D6 separately for each creature that failed the saving throw.
For example : At level 4 the spell can target total 2 Creatures and deal 3d12 + spell casting ability modifier damage each. At level 6 the spell can target total 3 Creatures and deal 4d12 + spell casting ability modifier damage each and so on.