Blade crescendo

Ⓒ Blade Crescendo (per-encounter free reaction ✦ stance maneuver)
Prerequisites:	Light Blade fighting style
Trigger:	You hit an enemy with a blade attack.
Effect:	Until the stance ends, you gain a +1 stance bonus to blade weapon attack rolls and damage vs. this target. Each time you hit this target with a blade weapon, the bonus increases by 1, to a maximum bonus equal to your Dexterity modifier. You end the stance if you end your turn without attacking the target with a blade weapon. You may end this stance as a standard action to perform a blade weapon attack against the target without this stance’s bonus; if you hit, the attack deals an additional +2 damage for each +1 bonus that the stance had accumulated.