IntroductionLux is a strong support as well as a normal AP champion. She has the ability to protect her teammates or chase down opponents. Majority of the LoL community doesn't like playing supports, but Lux's play style is far from boring.
I like to run 2 Greater Quintessences of Fortitude. As any non-tank champion, you start with about 4 bars of HP. This will put you at 576 HP with a Doran's Ring at the beginning of the game.
1 Greater Quintessence of Potency also gives you that early game boost that could be critical. A lot of the time you will be doing level one fights in either yours or the enemy jungle, so it's best that you can dish out as much damage as possible to kill the opposing team.
9 Greater Seals of Clarity gives you the mana regeneration much needed in early/mid game phases. As long as you're not spamming your skills non-stop, you should never be out of mana. Without any mana, you are rendered useless as your auto-attack is very slow and weak.
9 Greater Glyphs of Force gives you additional AP throughout the entire game, therefore granting you a higher damage output on your skills. A lot of people use cooldown reduction glyphs, but I believe that your Ionian Boots of Lucidity and/or golem buff give you all that you would ever need.
9 Greater Marks of Insight are the basic runes you should use for all AP champions. It allows you to deal more damage if the opponent has magic resist.
In a ranked or tournament match, it's important to know where the enemy jungler/team is. Clairvoyance grants you a limited amount of vision anywhere on the map with short cooldowns. It can be used to scope out enemies before they gank, or even if you want to gank them. As the person who holds Clairvoyance as their summoner spell, it's very important that you know when and where to CV. CV at the beginning of the game allows you to see the enemies' items as well as an idea of where they are headed to in lane or jungle. CV is also useful to see inside bushes. For instance, if you are planning a gank on the enemy team and they run into brush, you can CV the brush so your teammates can keep vision on them. Correct usages of CV can prevent enemy ganks on your team if there is no ward, as well as maintaining vision on dragon or baron.
With any champion, it's also nice to have an escape ability. Flash allows you to gain distance from your enemies if they try to engage on you.
If you are running the same runes as I chose, your level 1 HP should be at 576 with . This allows you to have a decent amount of HP for level 1 fights. If you successfully kill someone in a level 1 fight, you should always go back to base to buy . If you have assist gold, you should be able to afford a and .
Your first item after level 1 boots should always either be or (situational: depending on farm or kills). You want to rush as soon as possible. This gives you the most AP possible in one item. Do NOT rush a catalyst. Catalyst bonuses are not needed for Lux. There is no need to be tanky because Lux should almost always be in the back of the team. Basically, you want to do as much damage as possible.
After purchasing your deathcap, your next buy should be , NOT Sorcerer Boots. BoL gives you the much needed cooldown on your skills, allowing you to better fulfill your duties.
Next, you want to rush . By this point of the game, the enemy team should have built some magic resist. Void staff allows you to pierce through their resistance and deal more damage.
The next item is very situational. You may build more AP or some survivability. If you find that you are dying a lot, you may want to buy next. If you aren't dying much you can pursue on buying more AP by purchasing an . You'll be buying both, but it's your choice which one you want to buy first.
Usually games don't last this long, but if it does, sell your Doran's Ring and purchase a . Giving you more additional AP, magic resist, and also a proc on your passive, thus giving more damage upon an auto attack.
Maxing is probably the first thing you want to do (other than your ultimate). It gives you a lot of utility such as: damaging opponents, farming, slowing opponents when you are fleeing or chasing, and giving you vision in brush or hidden areas on the map.
I max next. Although most people would like to max her , I'd prefer maxing the shield in order to protect my teammates as well as myself in team fights.
I max last. Although it's a good skill, it doesn't have to be high level right away to do it's job.
And you should know that maxing is priority at level 6, 11, and 16.
Early GameUnlike most other supports, Lux needs a decent amount of farm. Most of the time, you'll be duoing with someone else on bottom, unless they're a roamer (i.e. ). Be sure you're getting in last hits as much as possible. If you're laning with someone who has greater farming ability (i.e. ), you might want to consider getting a if you know your creep score is going to be really low. You usually want to get after your and OR + when you go back to base. should placed at dragon and in either bottom brush of the river, or triple brush (depending if you're starting on purple or blue team). Basically just farm up, try to go for early kills if your lane partner and you are capable of doing it.
Mid GameBy mid game you should at least have and , as well as +10~ over a period of time. You'll be able to do a decent amount of damage as long as you can hit your skill shots. Stay with the team, don't get caught. Lux is squishy, if you get caught you're most likely dead unless you can bind them or flash away. If the opposing team is pushing too hard, it might be necessary to use your ultimate to clear creep waves so that they can't reach your tower. Your ultimate is NOT just to kill steal!
Late GameAt this point of the game, you should have at least your core items. Stick by your carry so that you can keep whoever is charging at them at a distance with . Use to make sure it gets to your carry and whoever may need it. Again, your laser is not just to kill steal. You may use it early on in the fight. It is an AoE skill that does massive damage, don't be afraid to use it even if it doesn't kill someone.
Team FightsIn fights, your skill order is critical. In early lane phase, start with to snare your opponent. With Lux's passive , you deal additional damage on one auto-attack. After you bind them, throw on them. Auto-attack them once to activate your passive, press E again to activate and you can auto-attack to activate your passive for a second time. If you have your ultimate, you may follow up with it as well. This allows you to deal the most damage possible. But also, don't forget to throw on you and your teammates! Even though it doesn't seem like much of a shield, it helps.
In later team fights, you may not be able to get this combo off smoothly due to five other opponents who may want to kill you. Don't worry about getting off auto-attacks, as long as you can use your skills effectively, you'll still do a significant amount of damage.
Final CommentsReminder: Don't save your ultimate just for kills! With the low cooldown time (with blue buff it's at about 20 seconds), you can usually use it whenever (even for creep farm).
Lux's ultimate's cast time is about 1 second long. If you plan to kill an enemy, take the cast time into account. Her ultimate is very easy to dodge, so anticipate where they will go!
This is my personal way of playing Lux. If you don't like how I build her, you can build her any other way you please.