Dieago's Ring

Worn by the lone explorer Dieago. After traveling the world, his final challenge was to conquer the dangerous forest ruins. However, he was ultimately overcome by its charm and decided to spend the rest of his days there. His life from that point is shrouded in mystery, but when the remains were found, he was wearing this ring. The most convincing theory claims it affected him in some way, so it has become the lynchpin of the investigation.