Idea: Scrap the Cleric who is too over powered, and replace it with a "mage" Mages use a new kind of thing called mana which drains when a spell is used.
Use the wand model as a "Magic wand", which shoots magic projectiles, does a fair amount of damage and takes away some mana.
Then you would have three spells. Fire, which is an area of affect spell which shoots flames around the player, ice bolt which freezes enemies and lightning orb which is a projectile that hurts enemies over time.
Also a gold wand which is found somewhere that is awesome
You need a way to hide from it at least, monsters doing damage to you from any length is just retarted
Or maybe it should shoot a fast invisible projectile :o