The unearthly sound echoed across the faire over the din of the crowd. An apprentice trying to make some extra coin had found a way to utilize his training tool. While this would scandalize his master and his peers, the common folk were mesmerized by the unique sound this instrument performed.
This is a quartet of low-magic rings that can be used separately or as a set.
The players see a small shrine to the local nature deity just of the trail. Before they even approach it, they can smell the foul stench of rotting meat. If they inspect the shrine, they can see it has been desecrated by rotting organs in the last few days. There is no mistaking it for an obscure ritual, the organs are thrown everywhere, not left in specific places as in sacrifice.
If the players try to clean the shrine, they will soon find it has been boobytrapped to fling sharp splinters covered in the rotting gore in every direction. While only doing a few points of damage, they injured players will likely take sick soon unless they get medical attention.