[Plunderin Mom]

I think its supposed to cause an additional amount of damage per each hit until its timer expires. I want to say it was 30 percent, but maybe it lasts 30 seconds (but both could be wrong...).

Either way, I unlocked it on test but rarely remembered to use it. And, of course, its affect is dependant on your crew actually firing when you do use it. At any rate, I decided not to unlock it on open and save the skill point for something else.