Needs review
Source: Encyclopedia Arcane: Illusionism

Description: You have the ability to add sensual qualities to spells that don't usually have them

Prerequisites: Spell Focus (Illusion)

Required for: Tactile Illusion

This feat allows you to add one or more of the following sensual qualities to an illusion: audible, olfactory (which includes taste), heat (restricted between mimicking 40 to 90 degrees Fahrenheit), or visual. An augmented illusion uses up a spell slot one level higher than the spell's actual level for each sensual quality added.