Think The White Queen from Narnia, meets Lady Gaga, meets Baba Yaga, meets Radagast
She wore a "fucked up bone mask" that looks like a deer mask
Primary weapon was a sickle, but would also use a crossbow
Rickety Nell (sometimes referred to as Old Nell) was a hag who was part of the Feywild Four. She was kicked out of her coven (but she wouldn't admit that), The Sisters of the Harvest due to snooping where she didn't belong. She was paranoid that they were out to get her, so she went investigating. This went unappreciated by the other hags, who told her to hit the bricks1. She, with the other of the Four, assisted Nook Nimmlock in bringing The Jade Pyramid to Lady Arnaesis.