Inaccurate?

Shades

(Player's Handbook v.3.5, p. 276)

Illusion (Shadow)
Level: Sorcerer 9, Wizard 9, Sha'ir 9,
Components:

This spell functions like shadow conjuration, except that it mimics sorcerer and wizard conjuration spells of 8th level or lower.
The illusory conjurations created deal four-fifths (80%) damage to nonbelievers, and nondamaging effects are 80% likely to work against nonbelievers.