WHAT YOU NEED TO KNOW: The Wicked Quills is a new microsupplement for Wu Xing, tying in nicely with Land of Seed and Blossom which released last month, introducing a new clan called, well, The Wicked Quills. They are a clan of ninja that are constantly besieged and don't get along well with others...oh, and they have crazy wushu involving their hair. In fact, this supplement introduces the Way of the Piercing Jacket, which allows them to use their hair to great effect as a weapon...and I don't just mean the hair on their heads. The effects include hair jackets, stiffening their hair into quills - and firing them, and hair strangleholds.
WHAT WORKS: Well, a new Wushu and a new clan are always nice. The hair powers are very interesting, if a bit niche. There's only one piece of art here, and it's gorgeous.
WHAT DOESN'T WORK: Well, they're hair ninjas. That's a pretty big oddity, but that's also a good reason why they weren't in Land of Seed and Blossom, and are instead floating around for hardcore completists to buy or ignore. I did catch a typo or two in the text, but nothing major.
CONCLUSION: Thoroughly unessential for someone who likes Wu Xing but doesn't get to run it very often, but a very cool, quirky and unique option for the hardcore Wu Xing group, or even for a GM who just wants to toss his PCs a curveball.