The one thing I have to say is that Lux's ultimate skill is not a channeling spell regardless of its graphics. Finales Funkeln cannot be interrupted, tho it's a good idea to cast it from a distance since enemies will immediately target you when they see your awesome beam of light coming out of you.

Other than that decent enough built, however this only works if you have an excellent early-game. If the game runs a little bit slower you will have a lot of farming to do in order to get that Needlessly Large Rod, and I would also rush at least Tier 1 boots a little, since she's so slow.

Have you ever SHIFT+4 while playing Lux? ^^