From Descent-Community Wiki 1.1
Use when you are attacked to force the attacking monster to reroll some or all of the atack dice (you choose which dice). The new results must be applied.
Balance is the essence of success. To succeed, one must be balanced in all things.
Also appears in:
- Descent: Journeys in the Dark Base Game 
- Runebound (Second Edition) Base Game 
- Runewars Base Game 
- Runebound (Third Edition) - The Gilded Blade Adventure Pack