Fireball is a magic missile with a range of 24" and causes D6 Strength 4 hits. The Wizard can choose to extend the range of this spell to 36" and the number of hits to 2D6. If he does so, the casting value is increased to 10+. Alternatively, the Wizard can choose to extend the range of this spell to 48" and the number of hits to 3D6. If he does so, the casting value is increased to 18+.