You’ll need to scrape off the oxidised layer periodically to restore them to full brightness.
These projectiles do a bit of area damage while also knocking back characters and activating things like redstone contraptions.
it’s possible for you to see how they’d be a nuisance in rooms full of traps.

More interested in building than plundering dungeons?
It’s the kind of thing Minecraft players have hitherto had to rely onMinecraft modsto provide.
Here are shots of a couple of Minecraft maps the creator has made with it.





