Greetings everyone, the build above is nothing but some thoughts I have on Alistar played as a tanky AD jungle support (Yes, you may laugh already). With this build you are supposed to do enough damage in order not to be ignored, have tons of health and armor in order to tower dive, be a hell of a tank while under ulti (which will have a cooldown of 48 seconds= 41 seconds after used -- almost spammable) and mainly end up with lots of assists, due to your slows, your CC's, your heals etc. I repeat that this build IS ONLY A THOUGHT, I haven't even tried it out yet (no time because of exams) and I'd prefer it if instead of rating it as good or bad, you'd give a feedback on it, stating your improvements on it... After I test it, I will edit it with the final version, taking in consideration everything you may have proposed and you will have the final version to judge or vote. Until then cheers, and I hope it inspires your own alistar builds :)

PS1: Yes I know Alistar is supposed to be AP, but that's the reason no one would expect you to play with attack damage. Also, 90 bonus AD from your ulti, sending you close to 300 AD on this build is not bad at all, considering you are the tank-support of the team. Ofcourse I doubt that this alistar can stand as the sole tank in a team, I believe a second semitank is required for you to be successful.

PS2: My lately builds are a little bit of everything, not excelling at anything, but offering many aspects so you can't be countered easily, and always be useful to your team.

PS3: Since leviathan is a risky item (imo not as risky as mejais or sword of the occult, since youre TANKY!!) you can substitute it with warmogs for more health and regen, but it's more expensive, and you lose the leviathan's passive which if aqcuired would make you indestructible! The choice is up to you