a small gray stone roughly mined.
once thrown, a dragonstone creates a wall of myst giving the user a chance to get away. the myst is however flammable, and if a stone is lit on fire it will explode. the myst lasts four turns and gives players a +1d4 to all covert rolls, and a -4 on all perception rolls.
Dragonstones look like a small gray stone roughly chopped out of the stone from the fiery mountains. this stone is somewhat valuable, but being by the flaming mountains it can explode hurting miners in the process. the stone is often used in Dragon goddess rituals, and said to hold powers for strength and riotousness.