Solid fog

Solid fog, formerly known as Veridon's solidifier, was a conjuration spell that created a tangible fog.

Users
Solid fog could be cast by sorcerers and wizards.

Effects
Functioning like its precursor fog cloud, the solid fog spell caused a cloud of fog to emanate from the point of origin, obscuring sight and concealing those within.

It was also so dense that it slowed all movement within, forcing all creatures to a crawling pace and hindering both melee and ranged weapons, bar magic rays. It could even slow the descent of something falling through it.

The solid fog would dissipate as a normal fog in a severe wind, and could not be cast underwater.

A permanency spell made a solid fog permanent and continually reforming.

Components
A casting of solid fog required a mixture of a pinch of powdered hoof from some animal, and a pinch of powdered dried peas.

History
The spell was created by the arcanist Veridon of Netheril, ruler of the enclave of Lathery. He introduced it in 3408 NY (−451 DR) under the name Veridon's solidifier. It later became known simply as solid fog.