I don't think I've ever seen one. Are they pretty? [He wants to be pretty, okay. Or exceptionally gross looking. Either works for him!]

Um...neither. Cultivation uses spiritual or resentful energy to cast spells and make talismans. Cultivators, if they're decent, focus on ridding people of ghosts, monsters and demons. I, on the other hand, used resentful energy to do...a lot of bad things.