Hallucinatory Terrain

Duration: 24 hours
You make natural terrain in a 150 ft cube in
range look, sound, and smell like some other
sort of natural terrain. Thus, open fields can be
made to resemble a swamp or some other
difficult terrain. Manufactured structures,
equipment, and creatures within the area aren't
changed in appearance. The tactile
characteristics of the terrain are unchanged, so
creatures entering the area are likely to see
through the illusion.