But there was only one sigil that she recognized from the artifact, a line with a squiggle that ran down it to make it look almost like a spring or a screw. In its description it claimed this sigil was used commonly for teleportation, but the costs of the materials to inscribe the sigil were rather hard to acquire. Apparently it had to be written in fresh blood, but not just any blood. It had to be the blood of a very powerful undead creature.