Wall of Fog (spell)

Wall of fog conjures a dense wall of misty vapour that greatly limits visibility within the affected area, including infravion and ultravision. The fog may be created anywhere, over land or water, passing through the middle of buildings or along a corridor, as high or as deep as the caster wishes within their ability.

Wall of Fog

Range	30 ft. +10 per level
Duration	2-8 rounds, +1 per level
Area of Effect	six 10 ft. diameter cubes per level
Casting Time	1 round
Saving Throw	negates
Level	illusionist (1st)

The fog is completely harmless, though creatures with an intelligence of less than 4 will "go to ground" in it. When the spell's duration comes to an end, the fog will require three complete rounds to evaporate, improving visibility by two hexes each round, until the effect is completely gone and full visibility is restored.