Telesma is a general term for the physical components of magical foci, as defined by the focus formula. Possible Telesma are grouped into four categories: * Mundane: Any mass-produced of-the-shelf item or device (e.g. a commlink). * Selfmade: Any item hand-crafted by the enchanter himself (e.g. a piece of jewelry). * Unspoiled: The item must consist only of pure natural components untouched by machinery or industrial process (e.g. a knife made of flint). * Exotic: Rare and unusual materials, often body parts of critters (e.g. a unicorn's horn).