Death Fog

The casting of a death fog spell creates an area of solid fog which has the additional property of being highly acidic. 

The vapors are deadly to living things, so that vegetation exposed to them will die — grass and similar small plants in 2 rounds, bushes and shrubs in 4, small trees in 8, and large trees in 16 rounds.

Animal life not immune to acid will suffer damage according to the length of time it is exposed to the vapors of a death fog:

• 1st round: 1 point

• 2nd round: 2 points

• 3rd round: 4 points

• 4th & each succeeding round: 8 points

The characteristics of a death fog are otherwise the same as a solid fog. 

The material components are a pinch of dried and powdered peas, powdered animal hoof, and strong acid of any sort (including highly distilled vinegar or acid crystals).

Solid Fog. When this spell is cast, the illusionist creates an area of fog similar to the effect of a wall of fog spell. However, while these rolling, billowing vapors conform to a wall of fog in most respects, only a very strong wind can move them, and any creature attempting to move through the solid fog will progress at a rate of but 1-ft per 1" of normal movement rate per round. A gust of wind spell cannot affect it. A fireball, flame strike, or a wall of fire will burn it away in a single round.