Evocation [see text]
As breathball, except as noted above and as follows.
The sphere may be opaque or transparent (noticeable only as a shimmer or ripple in the air). It remains in place until triggered, with triggering conditions set by the caster in the manner of a magic mouth spell.
Range: Long (400 ft. + 40 ft./level)
Sor 8, Wiz 8

From: Web