Calamus is a root which is often used in Hoodoo as well as various traditional paths. It is most often used for such works as commanding and controlling others. You can either grind it up into a powder to use solely as a powder itself, or grind it up into a powder to add to various spell powders with other controlling ingredients. I recommend hand grinding of the calamus chunks so that you are not using steel to grind the calamus. Of course in a pinch you could use the sacred coffee grinder or sacred magic bullet, though it doesn’t turn out quite as strongly this way. You can also use the chunks whole by preparing them magickally then placing them around the area of influence which you want to create.