Hallucinatory Terrain(Player's Handbook v.3.5, p. 238)
Level: Bard 4, Sorcerer 4, Wizard 4, Vigilante 4, Sha'ir 4, Gnome 5,
Components: V, S, M,
Casting Time: 10 minutes
Range: Long (400 ft. + 40 ft./level)
Area: One 30-ft. cube/level (S)
Duration: 2 hours/level (D)
Saving Throw: Will disbelief (if interacted with)
Spell Resistance: No
You make natural terrain look, sound, and smell like some other sort of natural terrain.
Thus, open fields or a road can be made to resemble a swamp, hill, crevasse, or some other difficult or impassable terrain.
A pond can be made to seem like a grassy meadow, a precipice like a gentle slope, or a rock-strewn gully like a wide and smooth road.
Structures, equipment, and creatures within the area are not hidden or changed in appearance.
Material Component: A stone, a twig, and a bit of green plant.