A galdrastafir to force a person to tell the truth. Edge the sigil into a piece of bone, and edge the name of the person you want to speak the truth, on the other side of the bone. Then place the bone inside a bag made from black fabric, and carry it with you. Whenever you are talking to the person, that you want to tell the truth, secretly remove the bone from the bag, and hold it in your hand, while talking to the person. If you ask the person anything, he or she is prone to tell the truth – if not verbally, then with obvious body language. But you need to be aware, if the person might have a counter-talisman, or a particular strong will – spotting the lie will be harder, yet still easier than without the Lygistafir.