Proposal for a Zilean Rework

So, recalling back to watching Madoka Magica, I realize there is a lot more potential to the concept of Time Mage than VCR: The Champion. Let's go over a hypothetical kit based on the ideas currently contained within Zliean and available on Homura from Madoka. Remember, numbers can be tweaked, so if something doesn't feel right, a number tweak might make it work out. The number ranges are not to indicate something being variable, but rather suggested numbers for tweaking.

Passive: Rewind:

 When an ally nearby Zilean would receive a killing blow, that champion is transported back in time 1-2 seconds in spacetime, being transported to the physical location at that time with the HP and Mana at that time, receiving a global cooldown on all their skills for 0.5-1.0 seconds. This passive has a 3-5 minute cooldown, and killing Eggnivia would proc it (for the lulz). (note, a similar skill existed in an rts I played but can't think of the name currently).

Q: Sticky Grenade:

 Zilean throws a sticky grenade in the direction of the cursor, which gets stuck to the first target hit. If the grenade does not hit a target, it sticks to the ground where it lands. After sticking to a target or the ground, Sticky Grenade counts down 2-5 seconds before detonating. Sticking an enemy champion allows this spell to be recast once during its normal cooldown period (but does not act as a cooldown reset).

Note: when combined with his ult, this would mean Zilean could hypothetically have 3 Sticky Grenades on the field at once, 4 is not possible due to his ult having to end before one cast during it to stick.

W: Statik Mine:

 Active:

      Zilean places an electrified mine on the ground which detonates when stepped on or after 2-5 seconds. Upon detonation, enemies within the explosion radius are slowed by 3/6/9/12/15%, stacking additively with other Statik Mines' slows and receiving 0.2/0.4/0.6/0.8/1.0% max HP damage.

 Passive:

      Zilean stores up to (rank level) number of mines in his inventory, generating one every 30/26/22/18/14/10 seconds.

The purpose of the W is a stacking slow that is not exactly easy to pull off, but when combined with his ult, can be an excellent point of strategic power for Zilean. At the same time, its an explosion of minor potency, it is meant to feel as being a minor potency to everyone who experiences it, rather than a minor damage to an ADC but a rubber bullet bouncing off bullet proof glass for the tank.

E: Time Warp:

 Zilean creates a bubble in spacetime at the target location, speeding up friendly projectiles and units while slowing hostile projectiles and units whilst they are moving through it. Additionally, when Zilean basic attacks an enemy champion in the Time Warp bubble, his cooldowns are reduced by 1 second. Time Warp also detonates grenades and mines within its field.

Note: This skill would be meant to be used in conjunction with his Q to maximize his ability to get a second grenade.

R: Time Stop:

 Zilean stops time for 2.5 seconds, forcing all other champions into stasis and turning them and the map greyscale (while Zilean remains in full colour). During this time, any skills and auto attacks made by Zilean are frozen in time the moment they are cast, becoming active and continuing towards their destination when Time Stop ends. Upon stopping time, all of Zilean's other skills come off of cooldown and may be used once each for free before Time Stop ends. Upon Time Stop ending, Zilean's other cooldowns resume counting down where they left off before casting Time Stop.