Prevailing Position
FEAT 10 reaction
at least one stance feat
You are targeted by an attack or attempt a Reflex saving throw against a damaging effect, and you are in a stance.
Your flexibility with stances lets you sacrifice their benefits to better protect yourself. You leave the stance you were in, gaining a +4 circumstance bonus to the triggering saving throw or to your AC against the triggering attack.
Pathfinder Player Core 2ORC