+1
Frost Queen's is still OP on lux... very good guide

This is a good start, for sure! I would try to put alternative items in your build as well. For example, you mention Liandry's and Athene's/Seraphs- I would make another PO and put these items in so people know they are okay to buy!! As well as if you feel that items like Frost Queen's Claim and such that you think also could work in ARAM for people to buy!!

Also, just wondering why you level your Q, W, and E in a pattern, rather than say, just leveling E first? I don't ARAM all that much, so maybe there's a good explanation :)

Lastly, I have questions about the mastery side of it. I definitely take TL when I'm in Summoner's Rift, but what do you think about an alternative of Deathfire Touch ? If you E 3 people, they will all burn, but your TL won't go off unless you can even auto one of them. Not to mention, the 7% MPEN will really help since most mages build Abyssal Mask or there are tanks anyways. I like both so I don't think you can go wrong with either, for sure, but I want to hear your opinion on it. I also would like to know why you go utility over the offensive tree? I would assume it's for sustainability since you can't go back? I personally love expose weakness for ARAM and I feel my job is to do supaaa damage since I'm a long ranged mage (with Bounty Hunter or Double Edged Sword ), but maybe your explanations will help me change my mind if I do ever get Lux in ARAM!

Thanks in advance and good luck with everything!

-Luminos