Use a lightning rod and a heavy core to craft the copper mace.
Watch the video to see it in action:
<iframe width="560" height="315" src="https://www.youtube-nocookie.com/embed/64UgGYdaHYs" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>Crafting
Craft the copper mace with a lightning rod and a heavy core.
Charging
When holding the copper mace during a thunderstorm, it has a chance to be charged.
The heavy core on the mace will light up to indicate it's charge state.
Each charge will give 4 lightning strike attacks.
Lightning Strike
Hit any mob with the copper mace when charged to deal a lightning strike attack.
All nearby mobs will be struck by lightning.
