Casketmakers are a highly secretive set of mages who have traded their vocation for immortality.
In order to live forever, these Casketmakers must build and carve caskets for whomever asks it of them. They may accept payment, but they must never ask for it. They must use only their own hands and manual tools to build these caskets. The caskets must be finished before the petitioner dies. The Casketmaker must choose each resource used in the making of the casket by himself. No other may be present as far as the Casketmaker knows, or the magic will fail. Once a Casketmaker has failed, his years catch up with him immediately. That is to say that one who has lived seven hundred years and fails is immediately seven hundred years older. May as well be dead. If they fail in their living years, they may continue to live until they die of natural causes. This almost never happens. And their mentors would probably kill them.
Casketmakers are taught by their mentors. There are very few mentors, and far fewer students, as some Casketmakers believe that no more shall be immortal after them.
They move constantly. If a Casketmaker moves into a town previously occupied by a fellow Casketmaker, the second to arrive must depart immediately after meeting the first.
Casketmakers cannot be killed or harmed by normal means. Only by failing to complete a necessary casket are they rendered vulnerable. Yes, they can be tricked.
They do not age passed a certain point. This point in their aging process is of their choosing, sometime after they are initiated. They may not age again until they fail.
The oldest known Casketmaker is a man named Parker. Parker has initiated more Casketmakers than any other known. Among his initiates, five survive. One of these has taught and initiated our man Camphor.