Darsson's fiery cube

Darsson's fiery cube was a spell unique to Halruaa.

Effects
This spell created a burst of flame that engulfed a cubical area no greater than 10 ft. (3 m). The intensity of the fire was based upon the power of the caster.

Components
This spell required a small cube of bat guano, a pinch of sulfur, and a flake of phosphorus to cast.