Cheats:

 In the "M"agic screen hold down the [Alt] key and type

 [Alt]-POWER  - You are able to cast every spell that are learnable,
                including Spell of Mastery. You will also get a fair
                amount of mana.
                However, all of the wizards get this also.
 [Alt]-REVEAL - You will get to see everything on the map, and so will
                all the wizards.