You don't need to read it all.
So this is a fiddles build made for killing. Not Pushing.
1)_Meki Pendant_So what you want to do is start off with a meki pendant in mana regen. This doesn't mean you can spam spells. The meki is so you can go from fight to fight without recalling. Not killing minions.
2)_Fiendish Codex_This is a branch off of your meki pendent. It only costs about 800 something after your meki so it's great for after the initial couple of lvls.
3)_Sorcerer's Boots_You need speed and you need spell penetration so you need to get Sorcerer's Boots.....thats it.
4)_Void Staff_Ok so now that you are doing OK (w8 you not playing as you read this, my bad.) you need to get the void staff. It gives you the Ability Power you need to rly start your bang.
5)_Zhonya's Ring_You need AP to kick @$$
Depending on your play style, you may want to put a point or two in dark wind for the silence and damage. I preferably don't like this. However I guess that's for you to decide.
Play Style: You want to get close enough to an enemy that you can Terror/Drain them. This will do a ton of damage. If they are smart, they will run out of range. If they are dumb they will try to attack you. If they attack don't stop draining. If they stun you run until your cooldown is done, then Terror/Drain again.
A Cool Use)_In the start of the game, if you find yourself with about 30 hp left and they are trying to turret dive you, DON'T PANIC. As soon as they are in turret range fear them. After that Drain their $HIT while the turret R@PE$ them. This is a huge cause of a little thing called RAGEQUIT!!!!
During team fights try to Terror/Drain, but not at the stake of taking damage. W8 for your ult to kick some ***.
Runes)_So the runes are already listed, but you probably noticed there are no yellows. Those are your preference.
Zhonya's Rings)_Ok. So, even if you dont use their active, it doesnt matter. The ability power will do all the work. The passive doesn't stack, but that doesn't matter when the 120 comess into play. If you find yourself running out of mana you should trade a Zhonya's for an Arch Staff.
Damn you Chogoth)_If the other team has a tank that you can't seem to kill. A great decision is trading a Zhonya's Ring for Deathfire Grasp. Suck my #$@% Chogoth! NAM NAM THIS!
(I WILL UPDATE THIS AS TIME GOES ON)