The benefit of the style feat Wind and Fire says
If you hit the same creature with both of your cutting wheels in the same round, you tear open the wound and cause bleeding. The bleeding creature takes 1 point of damage per round until it receives a DC 15 Heal check or magical healing. Wounds from multiple successful uses of this style cause cumulative bleeding—a creature affected by this style three times takes 3 points of damage per round from bleeding. (Secrets of Sarlona 119)
(The exotic weapon cutting wheel also appears in Secrets on pages 135 and 136.) The feat seems to make some bold assumptions like You only have 2 attacks and You're making melee attacks with your cutting wheels even though they're thrown weapons with a range increment of 10 ft. and You aren't an awakened giant octopus that's wielding 8 cutting wheels.
Anyway, that said, I'm considering having a creature take the feat Wind and Fire and the prestige class master thrower's thrown weapon trick palm throw (Complete Warrior 58) so that the creature, using the feat Quick Draw (Player's Handbook 92), when it takes a full attack can make a total of 10 attacks with its cutting wheels. (That is, 4 from its base attack bonus plus 1 from two-weapon fighting, each attack seeing the creature throw 2 cutting wheels due to the trick palm throw. To be clear, as the DM, I'm tentatively ruling that a cutting wheel—like a dagger—is, in fact, little enough to be used in conjunction with the trick palm throw; another DM would perhaps rule differently.)
When this creature hurls its 10 cutting wheels, do each 2 successful attacks trigger the benefit of the Wind and Fire feat?
Note: You would think that they wouldn't, but even giants tire of throwing rocks.