As an action, you can create this bomb. As an action, a creature can throw this bomb at a point within 9 meters, where it explodes on impact. Fog spreads to fill a sphere twice as big as normal for the duration. The fog spreads around corners. The sphere spreads around corners, and its area is heavily obscured. It lasts for the duration or until a wind of moderate or greater speed (at least 16 kilometers per hour) disperses it.