Is this anything as an uncommon magic item?
>Bankshot Blade
>When you throw the Bankshot Blade and speak its command word, it flies out in a straight line up to 120 feet in a cardinal direction (north, south, east, or west).
>When the weapon hits a creature, it ricochets 90 degrees (your choice of left or right) and accelerates, flying in a straight line up to 100 feet or until it hits another creature, repeating the process. Each creature hit must succeed on a DC 13 Dexterity saving throw or take slashing damage equal to 2d6 plus 1d6 for each previous bounce (2d6 on the first hit, 3d6 on the second, 4d6 on the third, and so on), or half as much damage on a successful save.
>The disk continues ricocheting until it hits a non-creature object or travels 100 feet without hitting a creature.


Objectively its worse than the javelin of lightning in like 95% of scenarios, it needs to hit 5 people to do the same total damage which seems incredibly unlikely, but the potential for it to pinball combo off just feels so enticing. I love things that make positioning more important like lining up a perfect lightning bolt. You could set up a combo even bouncing it off yourself and your friends to make a loop that keeps hitting the same few enemies until one of you dies.