Conjuration (Creation) [Acid]
Level: Sor/Wiz 6, Water 7
Components: V, S, M/DF
Casting Time: 1 standard action
Range: Medium (100 ft. + 10 ft./level)
Effect: Fog spreads in 20-ft. radius, 20 ft. high
Duration: 1 round/level
Saving Throw: None
Spell Resistance: No
Acid fog creates a billowing mass of misty vapors similar to that produced by a solid fog spell. In addition to slowing creatures down and obscuring sight, this spell’s vapors are highly acidic. Each round on your turn, starting when you cast the spell, the fog deals 2d6 points of acid damage to each creature and object within it.
Arcane Material Component: A pinch of dried, powdered peas combined with powdered animal hoof.
Source: Player's Handbook
Solid Fog
Conjuration (Creation)
Level: Sor/Wiz 4
Components: V, S, M
Duration: 1 min./level
Spell Resistance: No
This spell functions like fog cloud, but in addition to obscuring sight, the solid fog is so thick that any creature attempting to move through it progresses at a speed of 5 feet, regardless of its normal speed, and it takes a –2 penalty on all melee attack and melee damage rolls. The vapors prevent effective ranged weapon attacks (except for magic rays and the like). A creature or object that falls into solid fog is slowed, so that each 10 feet of vapor that it passes through reduces falling damage by 1d6. A creature can’t take a 5-foot step while in solid fog.
However, unlike normal fog, only a severe wind (31+ mph) disperses these vapors, and it does so in 1 round.
Solid fog can be made permanent with a permanency spell. A permanent solid fog dispersed by wind reforms in 10 minutes.
Material Components: A pinch of dried, powdered peas combined with powdered animal hoof.
Source: Player's Handbook
Fog Cloud
Conjuration (Creation)
Level: Drd 2, Sor/Wiz 2, Water 2
Components: V, S
Casting Time: 1 standard action
Range: Medium (100 ft. + 10 ft. level)
Effect: Fog spreads in 20-ft. radius, 20 ft. high
Duration: 10 min./level
Saving Throw: None
Spell Resistance: No
A bank of fog billows out from the point you designate. The fog obscures all sight, including darkvision, beyond 5 feet. A creature within 5 feet has concealment (attacks have a 20% miss chance). Creatures farther away have total concealment (50% miss chance, and the attacker can’t use sight to locate the target).
A moderate wind (11+ mph) disperses the fog in 4 rounds; a strong wind (21+ mph) disperses the fog in 1 round.
The spell does not function underwater.
Source: Player's Handbook