Valiant Damage is a reaction granted by having a Combat Inspiration.
Description
Add an additional 
+1d6 damage to your weapon attack.
You will expend your 
when the effect triggers.
At Higher Levels
When the College of Valour Bard reaches Level 5, the bonus increases to +1d8
When the College of Valour Bard reaches Level 10, the bonus increases to 
+1d10
How to learn
(Information not yet added.)