pues al final sí debe ser ese hechizo. aunque el nombre no encajaba mucho, hice una búsqueda por google y hallé esto:
"BAD-CORPSE DUST:
This spell creates a barrier which zombies cannot cross. This powder requires the intestines of a zombie, an ounce of flesh from the spell caster (which he must bite out himself), and the dried and powdered flowers of a rare jungle liana. The whole is carefully dried, pounded together, and chanted over for several hours (2 PR per hour of chanting), then poured in the desired trail or line, chanted over once more (for the cost of another 2 PR) for the spell to take effect (total of 6 PR). The dust forms a magical invisible wall which zombies cannot cross. This barrier remains until the dust is washed or blown away. One creation of the dust results in enough to form a barrier Cha in inches long. "
lo que no sé es porqué adopta en castellano un nombre tan cutrecillo...
un saludo y gracias a todos.