Kill all of Zac's bloblets when he splits apart to stop him from reforming.
Silences, stuns, roots and knockups will all interrupt Zac when he is charging Elastic Slingshot.
Zac heals from the goo that separates from him. You can crush the goo pieces by stepping on them.
The stats provided here underscore some strategic Sett against Zac counter statistics that can help you figure out the distinctions between the pair. As an example, Sett’s KDA ratio ([kills + assists] / deaths) of NaN is better than Zac’s KDA ratio of NaN, demonstrating that Sett may be more central to his team's team fighting capability than Zac. This observation is in large part fueled by the differences in deaths.
Sett normally has a similar longest killing spree as his enemy does. Typically, he takes less damage than Zac. This typically indicates different amounts of tankyness, but it can also imply that the one champ has less agility and thus is unable to kite away from further harm when engaged or poked.
Both League champions are great. Both champs have their pros and cons. In the game's current meta, Sett usually loses when trying to fight Zac, with a 47.7% win rate. Thus, Sett makes a bad counter to Zac.
While Sett does have a lower win rate compared to Zac, when they face off with one another, Sett also has a much lower level of difficulty that makes him a less difficult champ to develop with. You should expect to face a difficult match when picking Sett into Zac.
Moreover, Sett also has only a small amount of CC and other utility, a similar amount to Zac. This often makes her just as valuable during team fights, especially when facing champions with a ton of burst damage.
While there isn't one best champion for every situation in League of Legends, in Sett vs Zac matchups, Zac is the better champ with a lower win rate, less champion complexity, and a similar amount of utility to help out your teammates during late stage team fights.
Sett is a terribly counter to Zac. Focus your gameplay on keeping up your gold income and destroying objectives. If you are able to do that, you should be able to stand on your own as Sett against Zac.
To truly master Sett in order to counter Zac during both the laning and mid / late game phases of League of Legends, you should continue reading to pick up a few extra tips and tricks for this matchup. If you pay attention to the build and suggestions shown above, you will grow your win rate by a lot and be closer to League of Legends pro players.
Sett on average gets more CS as Zac. Champions who on average don't acquire much CS usualy don't require much CS to be effective, such as supports. They are able to scale properly off of their skills, stats, and first items alone. Yet, champions with a lot of CS, such as hyper-carries, typically require a lot of items to be effective. In either situation, try to surpass the numbers displayed here to do well.
The best items to focus on in your Sett versus Zac build consist of Titanic Hydra, Sundered Sky, and Stridebreaker. When Sett used at least these three items in his build, he performed a lot better versus Zac than with most other common item sets. In fact, Sett boasted an average winrate of 47.7% when playing against Zac with this counter build.
To have the highest likelihood of defeating Zac as Sett, you should equip the Conqueror, Triumph, Legend: Alacrity, Last Stand, Second Wind, and Unflinching runes from the Precision and Resolve rune sets. Out of all the rune combinations players used for Sett vs Zac fights, this combo of runes yielded the highest win rate. Notably, these runes provided a 47.7% winrate overall.
If you want to see Sett vs Zac tips and counter builds for a an individual skill level, feel free to choose one from the selection menu shown above. By default, the stats and guides given are computed using all matches played with both champions.