Aurora

You can consider her to be a Black Rose.

You will only battle her in the third part of the Foot of the World Tree. She has a wide range of attacks, which may stone you. Having a few mages or priests in your party is recommended. When she is defeated, she said that the only thing Widdershin and herself wanted, was to create a new world. After saying a few more words, she gets interupted, because she perishes away.