Everytime I play Zilean 
(80% of the times), I wonder why his "E", wont decrease enemy ADC's AS.
You could pretty much nerf the MS decrease, and give him AS decrease.
Putting aside the "Logic", from the Gameplay perspective, its also imbalanced, how he can 99% deny an Udyr/Volibear/Skarner by slowing their MS to 100, but is weak against other Ranged enemies.
Zane Zephyr2 votesthe last thing we need is another spammable wither
Daddy Ants2 votesNo.
Not when he can rewind and cast it again immediately.
Done251 votesRiot has been steadily nerfing and removing attack speed slows over the years. They're not going to add one.
Mártir1 votesAnd Silences from Talon,Kassa... Yet Fiddle, Malza and Cho have long ones.
BlueBilberry1 votesYou should also note that the E slow is easily countered by ghost and Predator - as I recently discovered in a game versus a Hecarim who didn't have to build merc boots or QSS to deal with me.
xDogMeatx1 votesi thought when you max zilian slow vs a hec his AD plummets due to 99% (or something) slow .
BlueBilberry1 votesi thought when you max zilian slow vs a hec his AD plummets due to 99% (or something) slow .
I thought that too - but last few games with Hecarims seem to show him just powering through the slow. It lasts at most about 0.5 seconds - then he is back to full speed.
xDogMeatx1 votesim guessing you have to attack with E Riiiight before impact.