If you wish to force a spirit to return to its origin in the aethyr, cast
the sigil of the spirit, and materials contrary to the spirit's nature, into
a small black box. Bind this shut and hang it over a brazier from the
point of an enchanted blade. Speaking the spirit's name and title,
command it to return to its origin and depart from you, lest you
subject the spirit to torment by burning the box and its contents.