It is said the devil wanted to construct the most perfect of all evils. He would pluck twelve of the most nasty women and throw them into a pot, cooking them together and capturing all of their evil essence. Then once they were fully cooked he would inhale the pure evil stem, holding it in his mouth and spitting a wad of pure evil  back into the cauldron, mixing it until a woman came out, this woman he named Baba Yaga.