Warning: This is 3.0 Edition material. It is possible that there is more recent 3.5 Edition version.
Inaccurate?

Incorporeal Spell Targeting

( Ghostwalk, p. 36)

[General]

You know how to cast your spells so they're more likely to affect incorporeal creatures.

Prerequisite

Benefit

Every time a spell, spell-like ability, or supernatural ability fails to affect an incorporeal creature because of its incorporeal miss chance, you can reroll your miss chance percentile roll one time to see if you actually affect it. If multiple incorporeal creatures are to be affected by the magical effect, you can reroll each creature's miss chance once.