Cartridge, Gray Dust Shot

This version of the gray dust cartridge can be loaded only into a weapon with the scatter quality. It functions similarly to a gray dust cartridge, except upon impact it bursts into a 20-foot-radius cloud. Creatures within the cloud take a –5 penalty on concentration checks to cast spells. This cloud dissipates in 1d6 rounds in still air. Light wind disperses the cloud in 1 round.