Zileans ult with Rewind = 28.6 second cooldown
Zilean has gotten a LOT more attention recently, and for good reason. To keep this organized, lets start with his passive.
Passive: Heightened Learning - increased experience gain of all allied champions by 8%. this does not apply while he is dead. I thought rito has clearly shown their disdain of global passives when they nerfed the tf and janna passives? on top of that, his is stronger anyways. I personally have had several matches where I am zoning the enemy hardcore, but im still actually having a hard time keeping up with them in levels sometimes. Can we please either change this to an aura, or change it to a cdr passive aura?
Q: Time Bombs - personally, I don't have a problem with this, it has counter play (mostly at least) and its his only damaging ability so naturally it should be strong. I think its fine.
W: Rewind - heres the problem with Zilean. Reduces all other ability cooldowns by 10 seconds. early game, sure it has an 18 second cooldown, but at max rank it has a 6 second cooldown. if you have max cdr, that comes to 3.6 seconds. this is especially a problem with support Zilean, and I will get into its combo with his Time Warp and Chronoshift when I go over them.
E: Time Warp - Zilean can choose to either speed himself or an ally by 55% for 2.5 - 5.5 seconds depending on rank, or he can slow an enemy champion for the same amount for the same amount of time. the cooldown is 20 seconds at all ranks. max cooldown reduction makes that 12 seconds. throw in a Rewind and that's 2 seconds for the first one, 3.6 for every one after that because that's the cooldown of Rewind. Note, this is a shorter cooldown than the duration. that is a big no-no. flashed away? ok, ill just walk up again and slow you some more, or maybe ill just speed up this rengar like Royal Club, permanently. How do you think youre going to feel with a 550 ms rengar headed down the lane towards you?
R: Chronoshift - most people see this and theyre like "this is fine, sure it revives someone but theyre stuck there for 2 seconds and its got a 3 minute cooldown." it doesn't really have a 3 minute cooldown. assuming you have your w maxed and you have max cooldown reduction, it comes out to a 28.6 second cooldown. he will have his ult up every fight unless youre doing a bunch of small fights SUPER fast. imagine this with a team of something like kayle, tryndamere, zac, trox, and zilean. I feel as if once zilean grouped nobody would die - ever.