"Stolas is a great prince, appearing in the forme of a nightraven, before the exorcist, he taketh the image and shape of a man, and teacheth astronomie, absolutelie understanding the vertues of herbes and pretious stones; there are under him twentie six legions." -pseudomonarchia daemonum
He teaches astronomy, history, and the knowledge of poisonous plants, herbs and precious stones.
A blend of baneful herbs created in ritual congress with the infernal spirit, charged on Stolas’ seal. Ashes of the seal are added to the oil.
Ritual anointing oil. Not for human consumption.