Necromanctic Sigil Creation

First of all you will need a round stone black if using for malific purposes or brighter if for a benign purpose such as healing. Then take the stone(preferably round) and take a dremel, a sharpie marker, paint, coal, whatever you wish, even blood, and write an insignia a shape like a triangle with a circle on one point and a line that is vertical on the other. Inscribe it and give it a purpose. To enchant the sigil draw up energy and push it into the sigil for about a hour. and there ya go a sigil of power!