Phase Rush procs instantly after your W+Q+E combo and gives you the movement speed you always seem to lack when having to stack and hit your E stun. You can activate E right before the W+Q combo to have it stack while the enemy is in the air.

Nimbus Cloak gives you much needed movement speed when using sums and the Hextech Flashtraption. You can use it so much more often and it gives a lot of playmaking potential.

I choose Celerity over Trancendance because of course... the much needed movement speed! You can cover the CDR with the items in the build so you get the most out of everything. Celerity works with your Phase Rush, Nimbus Cloak, Waterwalking, Shurelya's Battlesong, your boots and any speed boosts by allies.

Waterwalking is the best option out of the last three because it gives more to your ... check it... MOVEMENT SPEED in the river... therefore your roam potential. Also Scorch is useless since Ali doesn't poke and Gathering Storm also since Ali isn't there to be the damage dealer.

Hextech Flashtraption is broken if you have good vision and placement (which aren't hard to achieve or learn) since it not only surprises your enemies but it works with Nimbus Cloak and gives you a speed boost that won't be forgotten.

Finally, Cosmic Insight helps with your CDs which can determine how fights go. We all know the feeling of dying 1 sec before our Q Pulverize is available. Cosmic Insight alongside with the item choices will make sure that you don't only hit that one Q, but you hit multiple more!

These items make you reach 40% CDR, become tanky for your team and give you OH SO MUCH playmaking potential than a regular Ali build!

Your roam potential is mainly up to you unlike in most games! Due to the Phase Rush and the 75% Slow Resistance it gives, in most games you would want to take Mobility Boots so you FORCE roam potential. Buy Boots of Swiftness only versus teams with unbearable amount of slows.

As Core Items, you make sure to level up your support item quickly! Don't risk dying for it tho. Knight's Vow and Zeke's Convergence give you some much needed Armor alongside with some CDR, health and of course- the actives. Make sure to use them with the strongest ally on your team and make sure to REALLY USE THEM TO YOUR BEST! After finishing your Shurelya's Battlesong, not only do you gain some nice stats and a bonus to your passive's heal, but alongside this cheap item comes a big playmaker active. This MOVEMENT SPEED burst this item gives to you AND your allies can be used as an out of nowhere engage or a must needed disengage. A lot of people sleep on this item so I'm here to wake you up. Finally the Gargoyle Stoneplate gives crazy tank stats alongside with it's active which makes you double the tank for 4 seconds! You may take it before Shurelya's Reverie if your team is in dire need of more tankiness! When in late game, don't forget to pop that Elixir of Iron!

Don't forget to use your W Headbutt as a dodge tool! (use on enemy champs or minions to move out of the way of skillshots or to travel some distance when chasing/getting chased)

R Unbreakable Will - People forget that Ali's R works as a Cleanse. Not only does it make you tankier, but it removes CC effects from you. You can cast it right as a heavy CC ability hits you in order to instantly remove it!

W+Q+E - the infamous Alistar combo but with the difference that it is greatly empowered by this build and runes.

E+W+Q - you can pop E right before W+Q to stack it faster while the enemy is airborne but it might give away that you will be engaging if the enemy reacts fast

Q+E+W - Q to pop enemies up, activate E and move behind them, W them towards your team. Even if they dash/flash/run away, in most cases you will be able to catch up with all the MS you get from your runes and items and stun them with E.

E+W+Q - stack E on an enemy champ and stun them, W them into your team and if they have an escape tool, use Q to catch them right after they use it and secure the kill for your team!