You've now learned enough about things that can go wrong with the human body to convince your peers it's all happening to them. On a successful Charm/Storytelling Roll v. 11, you can drive your choice of fellow student to absolute despair and/or panic, imparting 2 points of Stress and Decresing Strength by 1. Effects last for three days, and you can use this trick even in duels.
Expand Stress in other (+2)
Expand Strength in other (-1)