Kind of a let down. I like them don't get me wrong. Very neat idea and helpful. But what is the idea of only being able to use one set at a time? Im 120 all bard skills. Why can't you use a bit of each? Like resilience stacked with invigorate for example. While using despair and tribulation for killing. I mean a pure bard gets what six Masteries? But you can only is two at a time. I personally find that a let down.