Suggested move changes
I have a suggestion that can finally fix the champion I post about the most. We all know adc's naturally have more armor, health, and mr than Alistar, but I know how to fix this. Bulls are angry creatures which get angry and chase people down. Considering this he should gain movement speed, armor, and mr the lower his health is dropped.
He is a bull which is supposed to be fast so makes his movement speed naturally higher than other champs. Since he's more viable as a ganker than a tank/support anyway this would more suit his play style. Maybe it can be an ability to go on all fours and get a movement speed increase while in that mode like udyr.
Second thing is his headbutt. A ways back I remember when his headbutt range was reduced. When you did this you should have gave his headbutt bleed damage. If a bull charges you his horns stick into you.
His pulverize should be completely removed and turned into a trample. Here is a link to a hero in Heroes of Newerth who has a move that would be perfect for him. https://www.youtube.com/watch?v=DTXz3eDYedE. Cthuluphaunt tramples and stuns his opponents. The idea would be that you use your movement speed to your advantage and trample the enemy then headbutt them backwards.
This makes it so the combo is still just one stun and a knock back with some bleed damage, but is just initiated in a different way. If you look at these other champs that are way stronger than him naturally and aren't even tanks they all have things like unlimited dashes and other escape artist moves that make them untargetable.
Also you can make Ali on an even playing field with champs that have invulnerability and moves that make them untargetable by giving his ult a slightly shorter cooldown so he can initiate more often. Either that or make his ult last slightly longer.
As it stands he's severely underpowered. I've seen 1 besides me since my account was made. I even tested the idea that AD Ali isn't viable and I can get S- and s+ fairly easy as an AD bot lane or AD support. You just kill the enemies in your lane then leave it early and gank, but if your teammates have trouble in there lanes and the enemy champions have a good start AD Ali can be tough. Tanking right now is just too hard until the crit, mr, and armor problem is fixed and certain other champions that are played regularly right now are severely nerfed.
I've stacked Randuins Omens when playing against Yasuo and it does work. The issue lies in the fact that it's the only way to fight him. There needs to be more diversity in the items so I can build 4 or 5 different items that have crit damage reduction otherwise i'm forced to stack the same item every game. It's a waste of unique passives and unique actives that we only have to stack because you refused to fix certain champions.
Bulls are fast, fearless, and ferocious animals especially when there mad. No one is scared of an Ali because they all know he's squishy and really weak right now. It's not Ali's stats and ratios that's the reason I can get S's as grades, but how I play him and how cautious I am. I played this champion since 2009 so you can trust that no one else is qualified as I am to give you advice on changes he needs. He needs to be on an equal playing field with champs like Riven, Fizz, Darius, Yasuo, and others that are severely unbalanced.