This spell can affect an area up to 10 feet in each direction. It has the effect of concealing anything within that area - doors, treasure cheasts and the like - and making the area look just like the rest of the space in which it is situated. The main purpose of this spell is to discourage people from searching an area: anyone who is not dissuaded will see through the illusion on a successful Int test (-10 per level of the caster). Illusionists looking at the area where the spell is cast get a bonus of +10 per level.