Try to stay away from walls. Ornn is much less strong if he cannot stun you.
Attack Ornn to keep him from creating items in lane.
The stats shown on this page show some strategic Sett vs. Ornn counter stats that can help us realize the differences between this set of champs. As an example, Sett’s KDA ratio ([kills + assists] / deaths) of NaN is more than Ornn’s KDA ratio of NaN, indicating that Sett may be more central to his team's team fighting capability than Ornn..
Sett normally has a slightly larger longest killing spree than his counter does. Commonly, he takes a similar amount of damage to Ornn. This is usually reflective of differing health capacities; however, it can also indicate that the one champion has less agility and thus is unable to flee from additional damage when poked or engaged.
Both League champs are great. Both have their pros and cons. In the game's current meta, Sett usually fairs equally well when taking on Ornn, with a 50.7% win rate. As a result, Sett makes an ok counter for Ornn.
While Sett does have a higher win rate than Ornn, when on opposite teams, Sett also has a lower learning curve that makes him a less time consuming character to learn. You still need to be cautious when picking Sett into Ornn.
Additionally, Sett has almost no amount of CC and other utility, a similar amount to Ornn. This often makes her just as valuable during teamfights, especially when trying to counter champions with a ton of burst damage.
While there isn't a single best champion in League of Legends, in Sett vs Ornn matchups, Sett is the better champ with a similar win rate, less champion complexity, and a similar amount of utility to help out your allies during late stage team fights.
Sett is a decent counter to Ornn. Focus your tactics on maximizing your gold income and taking out objectives. If you do that, you should hold your own as Sett against Ornn.
To truly master Sett to counter Ornn during both the laning and mid / late game phases of League of Legends, you should keep reading to pick up a few extra tricks and insights into this matchup. If you mind the build and suggestions shown above, you should increase your win rate significantly and be closer to League of Legends pro players.
Sett often gets a similar amount of CS as Ornn. Champions who typically don't acquire much CS typically don't require much CS to be valuable teammates, such as sup champs. They are capable of scaling well off of their skills, stats, and first items alone. Yet, champs with a lot of CS, such as hyper-carries, typically need a lot of items to be effective. In either case, try to do better than the numbers shown here to do well.
The ideal items to have in your Sett versus Ornn build include Black Cleaver, Sundered Sky, and Stridebreaker. When Sett incorporated at least these three pieces in his build, he performed a lot better countering Ornn than with many other common builds. In fact, Sett boasted an average winrate of 50.7% when countering Ornn with these items in his kit.
To have the greatest probability of crushing Ornn as Sett, Sett players should equip the Lethal Tempo, Triumph, Legend: Alacrity, Last Stand, Second Wind, and Unflinching runes from the Precision and Resolve rune sets. Of all the rune builds we have analyed for Sett vs Ornn clashes, this combination of runes yielded the highest win rate. In fact, these runes provided a 50.7% winrate overall.
If you would like to view Sett x Ornn tips and builds for a a particular division, please choose one from the selection menu provided above. At first, the stats and build suggestions displayed are computed using all matches finished with both champions.