Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
This is my zilean build which i find really awesome for harassing, will add more strategy later. Basically you stack ap quickly with assists (or kills) using majais, ur timebombs will cause slow (which lets u add more timebombs on their head) with rylais (plus the health is nice), i love lichbane on him due to his tremendously long atk range (plus gives good movement and ability power damage output). And of course by now his mana pool is big (most of the regen comes from clarity though), and you can finish AA staff for extra ap, and zhonyas to megaboost his ap.
Basic strategy is: TB-> atk -> RW, TB -> atk -> RW, TB and laugh at his face as he dies nexto his turret :)
Gl hf guys!