You tap energy from the Plane of Shadow to cast a quasi-real, illusory version of a sorcerer or wizard evocation spell of 7th level or lower. Spells that deal damage have normal effects unless an affected creature succeeds on a Will save. Each disbelieving creature takes only three-fifths damage from the attack. If the disbelieved attack has a special effect other than damage, that effect is three-fifths as strong (if applicable) or only 60% likely to occur. If recognized as a greater shadow evocation, a damaging spell deals only three-fifths (60%) damage. Regardless of the result of the save to disbelieve, an affected creature is also allowed any save (or spell resistance) that the spell being simulated allows, but the save DC is set according to greater shadow evocation's level (7th) rather than the spell's normal level.

Nondamaging effects have normal effects except against those who disbelieve them. Against disbelievers, they have no effect.

Objects automatically succeed on their Will saves against this spell.