"'I will raise a nithing-staff and curse whoever did this, but I need a sword to do the work.'"
-SM Stirling, The Sword Of The Lady (New York, 2009), Chapter Eighteen, p. 557.
What is a nithing-staff? See here.
Surely cursing is a misuse of mental energy?
Does the Law of Threefold Return not apply?
If a sword is necessary for vengeance, then was the curse itself not effective?