the single most needed skill for a dagger rogue, even more so than any attack you will ever learn. Dagger training will make your more proficient with daggers, thus doing more damage with them, FASTER. It is one of the most effective ways of increasing your low damage output due to the skill being passive and effecting your skills as well as your normal strikes, A-Spd increase is notable in higher skill levels. If you are going dagger rogue. GET AND RANK THIS SKILL! Bottom line, no exceptions.