Glitterlance can be fired at odd angles depending on where your cursor is - Moving your cursor closer to Pix and Lulu will change your area of effect size considerably.
Consider casting Help, Pix! on ranged attackers for the Pix boost and Wild Growth on Tanks or Fighters for the added initiation power.
The stats shown here feature some important Lulu against Sett matchup stats that may help you explain the differences between this set of champions. Lulu’s KDA ratio ([kills + assists] / deaths) of NaN is better than Sett’s ratio of NaN, highlighting that Lulu may be more central to her team's team fighting effectiveness than Sett. This observation is in large part fueled by the differences in assists.
Lulu normally has a significantly smaller longest killing spree than her opponent does. Typically, she receives less damage than Sett. This is usually reflective of differing health capacities; however, it can also imply that the champ with increased HP has less mobility and thus is not able to escape further harm when poked or engaged.
Both League champs are great champions. Both champs have their strengths, weaknesses, and counters. In League's current meta, Lulu usually loses when facing off against Sett, with a 45.0% win rate. As a result, Lulu makes a poor counter to Sett.
While Lulu does have a much lower winrate compared to Sett, when on opposite teams, Lulu also has a much greater level of difficulty that makes her a more difficult character to learn and master. You should be very concerned when picking Lulu into Sett.
Furthermore, Lulu also has a good amount of utility and CC, a similar amount to Sett. This often makes her just as valuable during teamfights, especially when facing champions with a lot of burst damage.
While there is not one best champion for every situation in League of Legends, in Lulu vs Sett matchups, Sett is the better champion with a much lower win rate, more champion depth, and a similar amount of utility to help out your allies during teamfights.
Lulu is a garbage counter for Sett. You will do well by focussing your play on keeping up your gold income and destroying objectives. If you can do that, you should be able to stand on your own as Lulu against Sett.
To truly master Lulu to counter Sett during both the laning and mid / late game phases of League of Legends, you should continue reading to learn a few extra lessons on this matchup. If you mind the build and stats shown above, you will grow your win rate by a lot and be closer to League of Legends pro players.
Lulu most often picks up a lot less CS as Sett. Champs who typically don't get many minion kills often don't require much CS to be valuable teammates, such as supports. These kinds of champions are able to scale well off of their skills, stats, and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, often have to have several high cost items to be effective. In either situation, try to do better than the numbers displayed on this page to do well.
The top items to have in your Lulu versus Sett build include Redemption, Ardent Censer, and Dream Maker. When Lulu used at least these three pieces in her build, she performed much better when fighting Sett than with most other commonly used counter builds. In fact, Lulu boasted an average winrate of 45.0% when playing against Sett with this counter build.
To have the greatest likelihood of annihilating Sett as Lulu, you should equip the Summon Aery, Manaflow Band, Transcendence, Scorch, Biscuit Delivery, and Cosmic Insight runes from the Sorcery and Inspiration rune sets. Out of all the rune sets players chose for Lulu vs Sett counterpicks, this blending of runes yielded the best win rate. In fact, these runes provided a 45.0% win rate overall.
By default, tips, statistics, and builds on how to beat Sett as Lulu are shown for all skill levels, merged. If you want to filter the stats and builds to a distinct division, you may use the selection menu earlier in the counter matchup guide.