A blast of fire that does 25 points of damage. Targets on fire take extra damage.
Firebolt is an apprentice level destruction spell that deals fire damage and sets targets on fire, dealing 30% damage and scaling down quadratically over 1 second.
Like most Fire spells, it can be used to set off Fire Runes or Oil Slicks from a safe distance. Also, casting it or merely having it ready to cast in an area with Flammable Gas will result in a massive explosion.