This is catch-all feat can be used to boost various class features. It is intended to subsume feats like Extra Rage and Extra Rage Power, which are functionally redundant with many other feats (such as Extra Performance and Extra Rogue Talent, respectively).
Prerequisites: Class feature that can be boosted.
Benefit: The effects of this feat depend on the class feature being boosted—see the text for that feature, and the example below.
Special: You can gain Boost Class Feature multiple times, each time selecting the same or another class feature to boost.