Illusionary Wall

Level: Sor/Wiz 4
School: Illusion (Figment)
Components: V, S
Casting Time: 1 standard action
Range: Medium
Effect: Image 1 ft. by 10 ft. by 10 ft.
Duration: Permanent
Saving Throw: Will disbelief
Spell Resistance: No

This spell creates the illusion of a wall, floor, ceiling, or similar surface. It appears absolutely real when viewed, but physical objects can pass through it without difficulty.