Icelandic Magical Staves
Hulinhjalmur (“Helm Of Disguise”) is a sigil that allows the user to become invisible.
The complex task of creating the ink to make this sigil is done by collecting three drops of blood from the index finger of one’s left hand, three from the ring-finger of one’s right hand, two from the right nipple and one from the left nipple. Then the blood must be mixed with six drops of blood from the heart of a living raven and melted with raven’s brains and pieces of human stomach.
Once that is done the sigil must be drawn out in this ink on brown coal (lignite) and then pressed into the brow, activating this visual magic to prevent your enemies from being able to see you.