Format:
cast 'ball lightning' <target>          cost:  25 mana                         
cast 'cone of cold' <target>            cost:  25 mana                         
cast 'demonfire' <target>               cost:  25 mana                         

   These three spells are somewhat rare, being the higher level offensive mage
spells.  Most often they can only be learned through personal research, as
most characters capable of teaching these spells will not.

Cone of cold is the most dangerous, as it is difficult to direct and aim.  The
spell creates a narrow cone of intense cold which is aimed at the target.  The
problem arises when other characters are also in the range of the cone - they
can suffer damage from the spell as well as the target.  The presence of water
enhances the effects of the spell, but it cannot be cast under or into water.