“Kahlan crushed the red berries into a paste, adding a little ash from the fire. When she was finished, she had Zedd hold a little mirror for her while she applied it in the pattern of the Con Dar, twin lightning bolts, the magic guiding her hand.[…]
The effect was frightening - and meant to be. It was a warning to the innocent. A vow to the guilty.”
- Wizard’s First Rule, Chapter 47.