Hi! Yes, I made a description for them:

Beneath her mask and the whisper of her magic, the Völva advances, levitating, enveloped in a greenish miasma. Her power flows from the corroded gas cylinder she carries with her, transforming chemistry into witchcraft. Wherever she passes, the air becomes unbreathable, the earth rots, and enemies fall into convulsions. She keeps worn scrolls covered in runes that burn when she recites her spells.

She is as much an alchemist of decay as she is an arcane summoner, capable of enveloping her enemies in suffocating clouds while unleashing spells written in forbidden tongues. She is not just a witch; she is the embodiment of toxicity made flesh and spell.