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.
So iv been screwin around with Zilean lately and been doin work. i build him damage just stackin alot of magic damage for a bigger blast from his bombs. ill explain what items are for and how i play with him.
[pro] increase in time bomb damage
[pro] cooldown reduction build
[pro] Mana regen is amazing
[con] support spells dont play a main role here
[con] lack of hp and protection
The way i play Zilean works for me maybe it will work for you,
what i do is lane bot in a 3v3 or top or bot in 5v5. while in a lane i try to harass close range targets (olaf,rammus,shaco) while only harassing long range targets if they are on reach of my time bomb. the more i harass the more they must heal or back up out of exp range (if it seems safe try to stand closer to back row of enemy minions so you keep scared enemy away from exp range) another note is try to kite your enemy around to set up a perfect gank, use time warp to slow them down and then time bomb followed by rewind and another time bomb. very easy build and play style, to simplifie * harrase, kite, win. P.S. Stay at max range unless baiting for gank, but you got ulti if things get ugly.
Farming on this guy is good once time bomb is maxed just trow in a crowd.
Team work is key, so if near death save them, or place a bomb on them...make them go out with a bang
dorans ring - starter, also get HP if needed
boots - magic pen and speed
Mejais soulstealer - more kills more AP, game changer if stacks are goin up
Deathfire grasp - extra spell for Zilean
Void staff - more magic pen
zhonya's ring - this builder didnt have new AP hat with the 30% ap boost if not i would of picked that and got it after i got majais soulstealer leaving viod staff last
clarity - mana!
Flash - quick escape
With this build iv got my 1 bomb to half health a target in one hit, so try it out and send some feed back