Howler

Howlers were created by Kuni Shugenja binding an Air kami into a small, easily shattered object, such as an eggshell, and were activated by shattering their vessels. They created a loud, distinct sound, that would heard over even the most heated battle. They were issued to scouts, sentries, and to any samurai who was likely to have a particular need to be heard at a moment's notice. Even a samurai who was too heavily engaged to shout or who was dying could notify the rest of the Clan. Howlers had been adopted by other Clans, particularly the Scorpion.