Fortify
Consumes all Courage to reduce damage taken for 10 seconds.
Damage taken is reduced by 10%, and increases with Courage spent at a rate of 0.1% per 1 Courage, up to a total maximum of 20%.
Duration is increased by 1% per Courage spent, up to a maximum of 20 seconds.
While active, the rate of Courage gained from damage received is increased.