Explosive cascade

Explosive cascade was a spell used by sorcerers and wizards.

Effects
When cast, this spell created a brilliant sphere of flame. This sphere bounced around the immediate area. Any creature who came into contact with it were burned. It gave of the equivalent illumination of a torch.

Components
In addition to verbal and somatic components, the spell required a material component, a metal tube enclosed at one end. It was stuffed with bat guano, sulfur and copper.