Mage-
The powerful mage can use all spells and read all types of incantations.
Swords and other similar weapons are useless to him, if he uses one he
would most likely get killed by who ever he is opposing.
Warrior-
The mighty warrior can use all weapons with ease. The only problem is that
all spells are useless to him and he can't use anything magical. He also
can't read incantations.
Druid-
The humble druid can use all spells that use
the four elements (earth, fire, wind, water) and ones to do with the stars
and moon. He can decipher some incantations and use only very small
weapons, like a knife, dagger etc.