Necturna
Mystress
Don't really like most of these. Necturna and Mystress are okay, I guess.
Damseloom sounds like Breloom. It just does. Either that or a nineteenth century workhouse. I don't get the etymology behind it besides [insert random suffix - "-oom"]. Thisyl isn't bad but it's an ugly name. I'd expect a Pokemon called Thisyl to be something you'd find growing under your foot, to be honest. Belladonna I don't like because random English names don't always work. Plus, it isn't Poison-type. Shamantra's okay but whenever I say it out loud, I hear "Samantha". Which isn't quite what I had in mind. Willowitch I'm not fond of because the artwork doesn't strike me as witchy or evil in that way. Herbinoire I don't like simply because of the etymology. "Herb" is awkward.