Springear Engine

Your power source is a series of gears and springs made of Tourmaline linked and winding back to the master spring.

Winding Down. Once a week you must wind your master spring coil. Generally done during a rest.
Electric personality. As the day goes on the springs build up an electrical charge. You can use this electricity to make a jolting attack. Lightning springs from your hand or through a metal weapon to deliver a shock to a creature you try to touch. Make a melee attack against the target. You have advantage on the attack roll if the target is wearing armor made of metal. On a hit, the target takes 1d8 lightning damage, and it can't take reactions until the start of its next turn. The damage increases by 1d8 when you reach 5th level 2d8, 11th level 3d8, and 17th level 4d8.
Wound for action. Up to three times per long rest, you may reroll your initiative if you would like. You regain all charges after a long rest.