Originally Posted by
rferries
Since you're generating "free" magic items I figured it needed a use limit, like a breath weapon (especially since all the throws are made at full BAB). It was inspired by all those ninjas (admittedly Lord Shen from Kung Fu Panda 2 :P) who never seem to run out of blades but don't spam them constantly. I could remove the limit (if you're investing so many feats maybe you've earned completely unlimited daggers), but then the attacks should probably be made at normal iterative BAB.