Alright, lets see what you got here bobo. 

In the Game, Tomes will be a weapon, but they work a bit differently than what you have (which is fine, but I am glad that one mage character suggested it). Tomes don't get basic magic attacks, in fact they aren't really used to attack at all. They are made to power up and make the casting of certain forms of magic easier and more powerful. The downside is that they use two hands to utilize and you can only use them for a specific form of magic. 

Here is what your Tome would do (gearing it more towards Arcane since that seems to be the direction of magic you are heading towards). 

Arcane Cantrip Tome: A Tome for beginners. Holds the basics and knowledge for Arcane Cantrips within and it is this slightly enchanted book that allows the knowledge of this book to make you use Arcane Cantrips more efficiently as this book can be used as a magic focus. All Arcane Cantrips have their power increased by 25% and their MP Cost reduced by 20%. However, Tomes are made for a specific form of magic, and thus you can only use Arcane Cantrips with this Tome. Tomes have a -5 Attack Speed and deal 1-4 Damage for those who would actually use them to smack people. Requires 2 Hands to wield. 

And your Skill. 

Magic Bolt (Lv 1: 0/100 XP) (Active: 10 MP): This Arcane Cantrip gathers up magical energy and fires it as a small, condensed bolt. Deals 1 - 8 + 25% INT Damage. To Level Up: Use Magic Bolt, Defeat a Foe, Get a Critical. 

How's this for what you want?