Start up with Doran's Blade and a health potion. Later buy berserker grieves following sword of the occult. Later buy a last whisperer and a bloodthirster. Next buy an infinity edge. Sell your doran's blade and buy a phantom dancer. And finally sell your shoes for another phantom dancer. Your damage output is so high and a high crit chance that now your crits will hit about 1k. Also take in consideration I'm taking count of sword of the occult with a minimum of 10 stacks.