(Giftgrabber) Witch Thief Edelnacht

Lore
This year, Edelnacht was surprised to find a sea treasure amongst her collection. Unfortunately for her, that gift's sender was most adamant about recovering it. Such nuisances were usual, but she had yet to encounter one skilled enough to defeat her. "Give it up, this power is mine now."

Acquisition
Evolve 2 Witch Thief Edelnacht

Name origin
?

Additional Info
Boss during the Gift of the Mermaid Odyssey Event.