i think as long as you're your own ally, its infinite up to your max aoo per targer per round. (1?)
after that, i think your just gonna get an aoo (to your limit) on each attack you make, im guessing less than 10 before aoo's. so, like 10 - 20 crits per round spread to multiple targets.
only having 1 level to toy with limits the abuse on this i think.
as always, blood in the water and double hit makes sure someone is having a bad day. well, a whole lot of somebodies.
i see a feat starved build.... 2 for getting blood in the water (or a level), both combat reflexs, power attack? improved two weapon fighting, snap kick, double hit. thats 8?
4 bab attacks, snap kick, itwf = 7 if you dont have a tail or extra arms. (more feats?)
7 aoo's and 7 double hits. and +21 attack / damage by the last hit. round two... i suspect is gonna be wasted looking for more targets.
my 2c.
im sure i'll get a bit corrected... lets have it..