Arc rifle

In the unforgiving lands of Etharis, having reliable and efficient weapons is as essential as carrying water and food.
In that regard, skilled inventors are highly sought after, and among them gnomes are the most renowned.
However, innovation can sometimes go too far, and the Arc Rifle is the perfect example of how.
Invented by a team of famous gnome engineers, it literally shoots lightning, hitting the target faster than any other ranged weapon and reducing flesh to ashes in mere seconds, regardless of armour.
Due in part to this tremendous efficiency, this weapon was quickly declared illegal in most regions of Etharis. It is also believed to destroy the target’s soul when it kills them.
This part-science, part-arcane contraption is a rifle-like weapon housing glass tubes of sparking electricity and powered by a small perpetual motion device.
The Arc Rifle has 4 charges. It regains 1d4 expended charges daily at dawn.
Lightning Torrent.
You can expend 1 charge as an action to launch a torrent of lightning in a 60-foot line, 5 feet wide.
Each creature that the lightning passes through must make a Dexterity saving throw with a DC equal to your scatter save DC.
On a failed save a creature takes 6d6 lightning damage, or half as much on a successful save.
Whenever you expend the last charge of the Arc Rifle, roll a d20. On a result of 1 the Arc Rifle has fried its mechanisms and becomes useless