The Way of the Mynock

Soresu Form: 3rd level As a bonus action, you can enter a defensive stance for one minute. As a part of this bonus action, and as a bonus action on each of your turns, you can cast the saber ward power. When you do so, you have a number of special reactions equal to your proficiency bonus that you can only use to cast the saber reflect force power. This effect ends early if you are incapacitated or die. Once you've used this feature, you can't use it again until you finish a long rest.

Granted by Soresu Form at 3rd level.