Kyuden Caerdydd - Spirit of Bushido
Replaces: Asahina Shugenja 3
Rank 3: Hake’s Lesson
When making an Artisan Skill Roll, you may expend a spell slot to add +2 per slot expended to the total of your roll. You may expend a number of slots equal to twice your Insight Rank in this manner. Air spell slots spent in this manner add +3 instead of +2.
Ref: BoA 180