I want to know the answer to the following question:
What forbid harmful  incantations?
All the background I'm provided with is that "The Twelve Tables forbade any harmful incantation (malum carmen, or 'noisome metrical charm'); this included the "charming of crops from one field to another" (excantatio frugum) and any rite that sought harm or death to others.". Is that enough to answer the question?