Fire storm

Fire storm was an evocation spell that permeated a area of effect with sheets of flame.

Effect
The target area would be drench all creatures within the area in flame similar to a wall of fire causing damage but usually not for a very long time but.

Some older versions had the ability to reverse the spell to fire quench, extinguished an equal area of magical fire, or twice the area of normal fire.

Components
This spell required vocal and somatic components.

Realmslore
The arcane version of fire storm was originally common only to the Red Wizards of Thay.