My SCP would be based off a young nymph. She can't help having plants grow around her. Instead of the stereotypical nature loving nymphs who try to protect forests and such, this one hates herself because of her anomaly; which being growing life around her in a small radius. In fact, she believes that she's cursed. Not knowing who her parents are and being rejected by society in 1300 AD, this led to isolation only talking to animals; specifically predators. She enjoys watching herbivores being hunted by predators because they spread the seeds of nature.
This young nymph blames nature for her condition and vows to destroy as much green as she can. Many urban legends spread about her as the years went by. When humans began hunting predators for sport, she began to resist them. She didn't kill them because they were nature's enemy with all the deforestation. It is now 2018 and a dedicated researcher spent his entire career finding this legend which he did and reported to the SkyDon Association (they hunt rumored or unknown organisms) where they captured and sold her to The Foundation.