Mirage Arcana

This spell works as hallucinatory terrain, except that any kind of terrain may be re-imaged, including terrain, structures, and equipment. This allows buildings to be hidden or added, and other equipment to be hidden or shown. Creatures, however, cannot be disguised or concealed, though they may always hide themselves within the illusion just as they could hide were the illusory terrain real. This spell requires a full turn to cast.