Cloudstones

Cloudstones are small stones that are commonly used by Wood Elves that can be found in fist-sized chunks in riverbeds, lakes, streams and beneath waterfalls. The stone itself is somewhat soft, for a rock, and comes in shades of white, light blue, light red, pink, orange, and yellow.
These rocks can be ground down, and made into a fine powder. The powder created from grinding cloudstones is tied into a small hemp pouch made of dried plants, and attached to an arrow. Most times, only a few ounces of the ground up stone are placed in the bag, although measurements can be adjusted, depending on purpose. Oftentimes, the arrowhead is completely removed, and is replaced by the small hemp pouch. Other time, the arrowhead is left on, and the small pouch is attached to the end of the arrow shaft. The pouch is tied extremely tight, using dried vines, and occasionally beeswax. When the hemp pouch breaks open, releasing a cloud of powder into the air. On average, the cloudstone dust from a normal arrow spreads about fifteen feet in all directions. The cloud caused by an average pouch lasts for up to a minute (1d10 Rounds). If exposed to rain, or any other source of water, however, the powder within the pouch turns to a sort of colored mud, and does nothing.
The powder cloud blinds and chokes those who are engulfed in it. Any being that breathes in the cloudstone powder begins to choke and cough for a short time (1d4 Rounds), impeding actions that do not involve escaping from the dust cloud. Their eyes burn and sting for as long as they stay within the cloud of dust, causing 1 point of damage per round exposed to the dust. The powder also marks an individual- In a forest, or jungle, where most Wood Elves live, white, light blue, light red, pink, orange and yellow stick out like a sore thumb.