Acid Fog

Make a spell card:
NameAcid Fog
SchoolConjuration (Creation) [Acid]
LevelArc 6, Blg 6, Sor/Wiz 6, Water 7, Wmg 6
ComponentsV, S, M/DF
Casting Time1 standard action
Recharge TimeGeneral
RangeMedium (100 ft. + 10 ft./level)
EffectFog spreads in 20-ft. radius, 20 ft. high
Duration1 round/level
Saving ThrowNone
Spell ResistanceNo