Well here i my guide to build TF is the first that i made so please tell me if you like it or not enjoy it.

Well for the Runes i basically is this ones
Quintessence and Mark: Insight It helps because you get magic penetration for your spells.
Seal: Force It helps because give AP per level.
Glyph: Knowledge It gives mana to maintain.

This TF is divided in two in the early game you begin with movement and attack speed (with berserker and sword of divine) but when you get in the late game you get AP and AD (Bloodthirts and void) and you get fast attacks and good magic damage.

Pros

Is fast in late game and do a lot of damage.
You get good Combos between the spells and normal attack.

Cons

Is good only between Mid and Late game.

Well here is please leave a comment if you like or not but thanks for seeing this guide.