He has a 53.03% winrate, his biggest problem is his ultimate, especially at level 16, and you decide to nerf him by taking away his movement speed by a measly 5?! You've got to be kidding me. I don't know if this is official yet, but this is what it's been saying on every website. Seriously how does this balance him in any way?
Remember what happened with Irelia when she got her -5 movement speed
I remember when cait got a -5 MS nerf a long time ago and it actually made her a much more balanced champion. I also remember how Graves was broken and just a measly -3 base AD brought him to more respectable lvls of power. People constantly underestimate what these "small" changes do to champions. Then again if it's not "X champion loses half it's ratio or has double CD on Y" it apparently never does and won't affect the champion in question in the slightest... despite the many, many samples that say otherwise
His early game goes even more down?
Riot and Kass players want Kass to be strong at 16/late game
Considering his laning is average, his roaming is eh, and doesn’t start rolling til 11+, nerfing his early game more will significantly do more than reducing his late game power.
5 ms does matter, especially since Riftwalk can be punished early game. Move speed nerfs are 2nd most significant, aside from range nerfs.
It is a win rate nerf. It doesn't really solve any of his problems, but it will lower his win rate 1-2%.
Main reason his winrate went up this preseason is the manascaleing on his ult. It went from ~51% to ~53% in 9.23, and the big change that directly affected Kassadin was that presence of mind now gives max mana instead of refunding a small % of ult CD(which on a high CD ult is nice, but on kassa it's hardly noticeable) the 500 extra mana on kassadin result in 15AP from Seraphs and 10-30 damage on the ult(based on stacks) For a full rotation with fully stacked ult, that's 78 aditional damage once Seraphs is completed, paired with a bigger manapool to keep the ults going. from a minor rune that also restores 20% mana on takedown to help his ult spam in teamfights. That's more than twice as much damage than Scorch does at lvl 18, on less CD, and that's just a sideeffect of it while scorch is nothing but that damage.
Also, the power of lategame dragons/elder also goes in his favour, by the time dragonsoul or elder become a thing, he's fully stacked up and from there on it becomes rather easy for team kassadin to controll dragons.
That said, 5 base ms is a nerf, even on kassadin since his ult doesn't really kick in till lvl 11. It's not gonna gut him, but he will feel it. However, i hate ms nerfs, they feel alot worse for the mains than they actually are for the powerlevel, it's a feel bad nerf with not to much(thoguh still some) actuall impact. Imo they should have adjusted some base damage and mostly the manaratio on the ult instead.
[{quoted}](name=MisterIceman ,realm=NA,application-id=3ErqAdtq,discussion-id=0ZzMBuE6,comment-id=,timestamp=2020-01-05T07:40:43.277+0000)
He has a 53.03% winrate, his biggest problem is his ultimate, especially at level 16, and you decide to nerf him by taking away his movement speed by a measly 5?! You've got to be kidding me. I don't know if this is official yet, but this is what it's been saying on every website. Seriously how does this balance him in any way?
The movement speed is meant to nerf his early game. It makes him more abusable since he'll be less able to dodge harass, and if assassins all-in him he'll have a much harder time disengaging before he dies.
I don't think you understand how much of a liability Kassadin is early to his team.
I as a jungle absolutely despise having a Kassadin mid because I know the enemy mid will be roaming 24/7 and invading my jungle while my Kassadin sits by his turret through most of the early game. The first dragon, we will lose.
If the enemy picks an AD assassin, the Kassadin is even useless up till 16+. That's virtually most of the game and the vast majority of games get decided way before then.
Kassadin is like Vladimir, both of them cost you early and mid game, set you way behind as a jungle and then you pray they are actually good and can carry after having been of zero impact for your team as your team 3v5's because the enemy jungler is ahead and your jungler can't do anything since those scaling champs offer zero lane priority for river scuttles and dragons/heralds.
Kassadin has 52.4% WinRate, so what? Ahri has been like that every single patch and no one complained.
At least you can easily counter Kassadin with AD matchups.
The main reason for Kassadin to be this strong is because he counters some of the strongest champions in the meta:
52.3% WinRate
52.6% WinRate
51.9% WinRate
and others.
In this patch there are a lot of mages who are strong and whenever mages are strong Kassadin is going to be strong. I am okay with Kassadin receiving nerfs but don't complain about the nerfs when there are other champions with higher WinRate and Riot is not even touching them. 
The MS nerf hurts his early Hurts his lichbane if he is rolling Hurts his precision rune (forgot the name for now) edit: fleet footwork
It's a decent nerf. Is it a gigantic nerf? Not really but it's pretty good.
Also people making it to 16 is a recent thing in the meta so itll take time to adjust.
Riot's balance team is just feeding the meme at this point
[{quoted}](name=MisterIceman ,realm=NA,application-id=3ErqAdtq,discussion-id=0ZzMBuE6,comment-id=,timestamp=2020-01-05T07:40:43.277+0000)
He has a 53.03% winrate, his biggest problem is his ultimate, especially at level 16, and you decide to nerf him by taking away his movement speed by a measly 5?! You've got to be kidding me. I don't know if this is official yet, but this is what it's been saying on every website. Seriously how does this balance him in any way?
It's a decent nerf. He will now be easier to chase and harder for him to clean up fights, roams will be harder and every time he walks up to CS he is more vulnerable to poke even if its just a bit.
While I think that Kassadin is indeed deserving of more strategic nerfs, I think you underestimate how massive a movement speed nerf is, even when it seems like a small value.
In the mid lane, losing movement speed in general is really bad for any champion, because they lose extraordinarily valuable seconds when roaming to help jungle or gank lanes. Not only that, but this generally reduces his mobility in between dashes, making it easier to collapse on him if you have the burst.
Nerfing Kassadin's movement speed by 5 would be akin to taking 8 AD off of Darius lvl 1. It may not seem like a huge value in and of itself, but a difference like that is game changing for a champion.
I don’t think you recognize how important movement speed is. This nerf means it takes him another 2 seconds to gank either sidelane from mid. It means it takes another 3 seconds getting back to lane. It means that he relies on his ultimate more for mobility and will die to more pre-6 ganks and will be more likely to die when OOM. It may not sound like much now, but it will make a difference.
Yeah and Vayne AP scaling nerfed by 5.
He should get his mana costs increased IMO. This champion was designed and balanced around time when there wasn't 
giving him 25% lower mana costs or Presence of Mind giving him free mana. I feel like he should be gated by his mana costs a bit more. His ult was supposed to cost 800 mana when on max stacks but Archangel reduces it to 600. That's A LOT especially when he gets free mana from Presence of Mind and his W got buffed in the past. If they raised his max stacks ult mana cost to 1000 from 800, it would still be reduced to 750 by Archangel which means it would still be less than originally intended cost of 800 mana. Kassadin builds Archangel 99% of the time so that should not be a problem.
