|A massive gush of bone dust pours out of your mouth and whirls around.|
|[ Bound ]|
|Target: A blast, centered on you, but not including you.|
| Effect: Stinging bone dust makes all creatures in the area blind. 2 meters of bone dust is sufficient to provide concealment from observers looking through it. The area follows you, and continues to make creatures in the area blind for so long as it is bound. Creatures who leave the area can see again. The area is 20 meters, but you can increase it to 60 meters as a standard action, and then to 100 meters with another standard action.
The whoosh of bone dust is audible from 300 meters away.