alright i'll change them :) thanks for the advise!

While in theory it seems like a good pick, Perseverence actually gives you almost nothing, while Good Hands can shave 6-7 seconds off your death timer late game, which can sometimes be the difference between victory and defeat.
3 points in Perseverence gives you 4% increased regen. At level 18, Lux with your runes and items has 14 hp5 and 15 mp5. This means that Perseverence gives a bonus of 0.56 hp5 and 0.6 mp5. That's ONE more hp every 10 seconds: pathetic. Also, the first point in Perseverence gives you 2%, while subsequent points each give only 1%. That's why it's almost never worth it to get more than one point.

As for Expanded Mind , it's just a **** mastery in general. Since it works off your BASE mana, it's not even worth it to get it on Singed or Ryze. The other utility masteries are FAR superior to these.

so why is spending less time dead better than health/mana regen?

Good Hands > Perseverence
Awareness (or in this case, Quickness ) > Expanded Mind
Ask any knowledgeable member, they'll tell you the same.

Also, blue buff is HUUUUGE on Lux. You should almost always take it, unless your jungler needs it early game or you have a Swain or something. Get Utility Mastery for sure.

I would get one point in Prismatic Barrier earlier in the game. That shield can save someone's life (or your own), even at level one.

Two Rabadon's Deathcaps is a bad idea, especially after the AP value nerf. Try Archangel's Staff, Zhonya's Hourglass and/or Banshee's Veil instead.

I would suggest Greater Seal of Scaling Mana Regeneration or Greater Seal of Replenishment over Greater Seal of Ability Power. The AP you get from seals isn't the greatest, and Lux is quite mana dependant when you don't have blue buff. This one's more up to you though.

Hope some of that helps you.

blasts ***es.. nuff said

How wouold you suggest the masteries?

try more mobility in Masteries (better then little Manna Pool)
I like Glass Cannon Lux, especialy when you survive and overkill ;)
+1