Magic:Acid Fog

Conjuration (Creation) [ Acid ]
Level: Sor/Wiz 6, Water 7
Innate Level: 6
Component(s): V, S
Casting Time: 1 Action
Range: Long
Target: Large
Duration: 1 Round/Level
Counter(s): --
Saving Throw: Fortitude/Reflex
Spell Resistance: Yes
Metamagic: Empower, Extend, Maximize, Quicken, Silent, Still
Energy Substitution: No

A bank of fog billows out from the point the character designates. Creatures inside the cloud take 4d6 acid damage every round (reflex save halves the damage), and they must make a Fortitude save every round or have their movement reduced by 50%. The movement reduction ends after exiting the AoE.