During laning phase you want to just try and survive the poke hell lanes and/or hooks that may come flying at you while csing. Don't go for anything risky alone as you have your supp with you remember. But you also want to try and throw your q's through your wave to poke often and make sure they hit the enemy to proc your presence of mind (unless you are trying to freeze wave of course). But you also need to make sure you get some dark harvest stacks out of laning phase as this will be important later in the game when trying to "one shot" people especially those with low armor.And remember your first power spike will serrated dirk as it will help you with farming better and damaging your laner if you can hit your q's or even autos.

In the mid lane you can find anything from assasins to mages all of which are dangerous to you and your low base stats so just try to farm mostly until a gank comes or if you find the perfect opporunity even roam to another lane for an assist kill or dh stack. But remember your first power spike will serrated dirk as it will help you with farming better and damaging your laner if you can hit your q's or even autos.

When roaming you want to look for enemies that are pushed up way to far or enemies that you can pick off with your ult. Don't try to force a roam by sitting in a bush for 2 minutes or trying to go after someone who near or under their own tower and full hp because then you miss out on your own cs and xp by wasting your time. Oh and always remember to use your w because as long as they don't have a control ward they'll never see you coming (unless of course your lane pings you missing and they actually listen).