The caster can alter the aura of herself or another.
The Netbook of Witches and Warlocks
By Timothy S. Brannan and The Netbook of Witches and Warlocks Team
The caster can disguise a person’s alignment, level or whether or not the person is telling the truth or a lie. This spell will fool and magical detection, such as the caster’s own Aura Reading. This spell will also fool any other types of magical or psychic means of discovery such as Analyze Magic (opposed spellcaster roll).
A spellcaster casting Aura Reading will believe the spell or item to be what the target appears to be under Aura Manipulation if they fail an opposed caster level check, in which the caster of Aura Manipulation receives a +4 bonus.
This spell requires a piece of quartz crystal.