TLDR: Flying wyrms called wyverns have appeared in a new area
The concept is having another type of enemy instead of the usual grounded enemies, maybe spice it up for old and new townsfolk. These are wyrms that have been changed in someway forcing them to evolve and take to the skies via magic or another mean, they usually spawn in groups of 4-5 and swoop down at the player trying to sting them with their new evolved stingers.
Due to being able to fly these wyrms have now gained a tolerance to the sun’s light on their leathery scales and now gleeming with a new light blue (or orange)coat. And when killed they have the chance to drop light blue (or orange) leather rolls and Large Leather Rolls