with this build your AP will be around 926.9 (if i did my calculations right) which will mean your ravage (E) will be stupid powerful causing a total of 1246 damage. and thanks to your friend Lich Bane your next auto attack will do your AP in damage as well. You also want to make sure not to be tempted by boots. if you get any, get the ionian boots of lucidity for there CDR. also remember that you are slow as hell and you only have a flash to save you in a last ditch situation. if you can, kill them then hide in a bush and use your Shadow walk (W)

ALWAYS start a fight cloaked. if they cant see you then you are a step up on the competition. when step 1 is complete go up behind the pore soul and use Ravage. fallow this with a auto attack and then spam hate spike if the aren't already dead (rather unlikely after taking 2172.9 damage if they are a squishy) the hate spike will deal a nasty 259.38 each hit, and with a .7 second cool down.....ya its that good. never forget to pop an ulti before a kill however. to recap, your button combo is W R E auto attack Q (till they die). if your fighting singed you may need to use an extra E. in team fights, focus the support then there highest damage.

this build costs a LOT of cash. your best shot at getting all this gear is to have an agreement with your friends that they will let you get tons of kills in the game by letting you run lanes and get the killing blows. get the dragon when you can and don't forget that Barron will be a rather appealing idea to the other team so make sure someone has a ward there at all times so you can KS the badie and there team. it works wonders, and with most games, they will surrender at about 45 mins or earlier depending on how you gear.

if you want to go straight AP then there are a few things to trade out. one is the Crystal scepter for Zhonya's hourglass. the Abyssal scepter is also nice to have but is hard to find a place for it.

to farm the kills you will need for the money and levels, you will need to jungle, get last hits on the enemy, kill the dragon when possible, and try to get Barron when ever you can. people will tend to surrender if you have a large amount of dealt damage and you go get Barron so only engage when you need to unless you want to win the game. don't try to take on teems and try to kill there jungler whenever you can.

Flash and Ignite are a must. i don't see much of any other way to run this person because of the lack of speed and the damage given by Ignite. if you want though, you can change Flash for Ghost and Ignite to Promote so you can still have a chance to get away and the promoted minion will give you the gold for its kills.

The runes are completely up to you on how you pick them, i chose this build because it is ALL AP and it gives the greatest bonus late game. you could also trade out for Spell penetration or for CDR but i thought this would be a good one to use.

PROS: CONS:
you are a nuke Slow a hell
can take anyone on late game Only escape is stealth or ulti
lowest CD on Q Low health and armor
Great to lane with SQUISHY
Strong mid Focused in team fights
Nice body to look at Nice body to look at
has a 50 second stealth If they have an a vision ward your ****ed
heals from champion kills or assist Need LOTS of money

As a passive, you take 50% less damage from minions so it would make seance that you can lane well. You can usually cover a lane from a horde of minions at a low lvl to so it makes you an invaluable player. as for jungleing, you can start at 5 and should do it when you arnt needed in the fight.

the second build is made to piss people off. run around invisible with the sun fury cape and just stand next to them. its great fun.