ARAM Pick
1
Combo Alistar
Headbutt into Pulverize to engage and hold out with R.
Item order
Plated Steelcaps
Hollow Radiance
Jak'Sho, The Protean
Zeke's Convergence
Thornmail
Kaenic Rookern
Skill order
Q›E›W
R whenever available
Augments to take Pick them when offered · higher is better
Prismatic
Gold
Chain ReactionIf a target Knocked Back by chosen ability hits another champion, they are Knocked Up and dealt damage. When colliding with terrain, the Knock Up duration is extended and they are 
Tank EngineOn takedown, gain a stack that increases your size and max Health. Lose stacks on death.
Soul EaterImmobilizing an enemy champion grants 30 max Health. If taken as your second Augment, starts with ? Health.
2
AP Alistar
Q, W and E scale with AP, so the engage also bursts.
Item order
Sorcerer's Shoes
Luden's Echo
Zhonya's Hourglass
Rabadon's Deathcap
Void Staff
Shadowflame
Skill order
W›Q›E
R whenever available
Augments to take Pick them when offered · higher is better
Prismatic
Augments are offered at random. If none of these show up, take one from the same category (attack speed, crit, health…). Items follow the ARAM: Mayhem shop for patch 26.22.