The yellow imphasis is mine.Mind Fog
Enchantment (Compulsion) [Mind-Affecting]
Level: Brd 5, Sor/Wiz 5
Components: V, S
Casting Time: 1 action
Range: Medium (100 ft. + 10 ft./level)
Effect: Fog that spreads to fill a 20-ft. cube
Duration: 30 minutes/+2d6 rounds (see text)
Saving Throw: Will negates
Spell Resistance: Yes
Mind fog produces a bank of fog that weakens the mental resistance of those caught in it. Creatures in the mind fog suffer a –10 competence penalty to all Wisdom checks and Will saves. (A creature who successfully saves against the fog is not affected and need not make further saves even if it remains in the fog.) Affected creatures suffer the penalty as long as they remain in the fog and for 2d6 rounds thereafter. The fog itself is stationary and lasts for 30 minutes (or until dispersed by wind).
The fog is thin and does not significantly hamper vision.
DM_Matt said:Perhaps to make it harder to cast I could elaborate on the ritual of the casting and require expensive materials. Perhaps one must inhale a moutful of insanity mist (caster is not effected in this case), then exhale it as the magically-enhanced gas.
That gives it a 1500gp/casting cost and makes the fact taht it does so much poison dmg more reasonable.
Felix said:I've no cruncy advice for you, but I do have a question: Is "Anal-nathrac, uus-vas-bethad, dochiel-dienvey" the verbal component of the spell?![]()
DM_Matt said:And the caster being affected by the poison is just fine...then agian, its intended to be cast primarily by vampires, so that would not really do much.
I agree with the yes on SR, making the area smaller, and the light supression occuring only once.
Hmmm...perhaps the spell will require any inhaled poison (other poisons allowed too?) to be taken by the caster, and the poison effects, which fill a wider area longer than they naturally do, and DC, are identical to whatever poison that is.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.