Been maxing W second on Lux and I really like it
Especially when against tankier / shieldy teams.
With 3 points in at level 10 you got a 240 (+80%AP) AoE shield.
Maxed at level 13 is 440(+80%AP) AoE shield.
The cooldown also goes from 14s-10s and with 40% CDR is on a 6s CD. The shield lasts for 3s out and back so you got potentially 100% uptime on the shield or at least 1-2s downtime.
I've been building

Tho you could just go a normal build I guess. I feel with this build that my presence is a lot higher and not as gated with Q.
Also learned that
isn't slowed down by farming when you complete it which is nice.
and you'll be laughing for days.