struct artifact
{
  object *item;
  uint16 chance;
  uint8 difficulty;
  artifact *next;
  linked_char *allowed;
};

struct artifactlist
{
  uint8 type;                   /* Object type that this list represents */
  uint16 total_chance;          /* sum of chance for are artifacts on this list */
  artifactlist *next;
  artifact *items;
};