Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
Start off with Ruby Crystal, it should give you the survivability to stay in a lane till 1.5k-2k gold.
When you are going back to base buy Berseker boots and Giant's Belt, it will grant you high hp with good attack speed for better laning. You want to hurry warmog because then you can stack it.
When you are fully stacked with Warmog game should be on 25-35mins, if you are doing it right.
When you get atma's then the fun begins, You have 4.2k hp with full stacked warmog and nice critical chance with superb attack damage because of the passive of atma, you will basically rip your enemys apart.
Engage , use your ultimate and flash in knock them up , Headbutt 1 squishy target to ur team and start to kill enemys, its ok when you die, because your team will most likely ace or kill most of them (you have to have good team)..
Next up is frozen mallet, here is the point where the game is almost in the end, frozen mallet speed reduction is a cherry on a pie, because with your attack speed and critical damage you will slow them down for your team to kill them...
WHEN your game IS actually still going on... Get one of those items : Last Whisper, Starks fervor or the one i use in my build...
It depends who is in your team and what items do they use..
if there are alot physical attack champs who use regular atks then get starks.
The build has always worked for me and even in Ranked games people underestimate Alistar...
So you can entirely mess up their team formation and sacrifice yourself for your team.
Enjoy the Build, Because ALISTAR is great.