Assassin Renekton Mid???
Brutalizer -> Hydra -> IE with cooldown boots as core build, maybe picking up a Doran's Blade at some point along the way (cus u really can't go wrong with Doran's Blade) -- your goal in lane is to survive and destroy the enemy with all-in burst, and your goal in teamfights is obviously to subtly kill the enemy ADC in less than 1 second