Evolution curse

The Evolution Curse was an ancient that existed in the early world of Val. It was an curse that was known to bring on sudden and random mutations to humans and elves that were afflicted by it. Despite it going mostly extinct, it remains within humans who live on Yonne, albeit not to the same effect.

Effects
The Evolution Curse had one big effect that is known about, when a person is inflicted with the curse, their body's DNA becomes unstable and it allows for quick and easy mutations, being able to adapt to the landscape, this however is extremely painful as the users' body is able to sprout wings at a moment notice or shrink their body to suit their needs.

In Yonne born humans, the curse takes on a smaller effect, as they're able to adapt one time to their environment, such as growing a tail, animals ear or a pair of nonfunctional wings.