Use Umbral Dash while casting The Darkin Blade to increase your chances of hitting the enemy.
Cast World Ender when you are sure you can force a fight.
Crowd Control abilities like Infernal Chains or your allies' immobilizing effects will help you set up The Darkin Blade.
Each time Kassadin consecutively uses Riftwalk, he pays more and more mana. Keep this in mind as you chase him.
Kassadin deals mostly magic damage. If he's doing well consider buying magic resist items like Mercury's Treads and Banshee's Veil.
It takes 6 spell casts for Kassadin's slow, Force Pulse, to become castable. If he levels up that ability, judiciously use your own skills while laning against him.
The stat comparisons shown here clarify several important Aatrox against Kassadin matchup statistics that may help us interpret the differences and similarities between this pair of champs. As an example, Aatrox’s KDA ratio ([kills + assists] / deaths) of NaN is more than Kassadin’s ratio of NaN, showing that Aatrox may be more central to his team's team fighting effectiveness than Kassadin..
Aatrox normally has a similar longest kill spree as his opponent does. Commonly, he receives more damage than Kassadin. This commonly reflects differing health capacities, but it can also show that the one champ has less mobility and thus is not able to escape additional damage when engaged or poked.
Both League champions are great. Both champs have their pros and cons. In League's current meta, Aatrox usually wins when trying to fight Kassadin, with a 51.8% win rate. As a result, Aatrox makes a good counter for Kassadin.
While Aatrox does have a higher win rate compared to Kassadin, when facing one another, Aatrox also has a much lower level of difficulty that makes him a less complex character to pick up and master. You still need to be cautious when picking Aatrox into Kassadin.
Furthermore, Aatrox has almost no amount of utility and CC, a similar amount to Kassadin. This often makes her just as valuable during teamfights, especially when fighting champions with a lot of burst damage.
While there is not one best champion overall in League of Legends, in Aatrox vs Kassadin matchups, Aatrox is the better champ with a higher win rate, less champion complexity, and a similar amount of utility to help out your allies during team fights.
Aatrox is a decent counter to Kassadin. Focus your play on increasing your CS and clearing objectives. If you are able to do that, you should do very well as Aatrox against Kassadin.
If you would like to truly master Aatrox in order to counter Kassadin during both the laning and mid / late game phases of League of Legends, you should continue reading to gather a few extra tricks and insights into this matchup. If you pay attention to the build and suggestions shown above, you will increase your win rate significantly and be closer to League of Legends pro players.
Aatrox often racks up a similar amount of CS as Kassadin. Champs who typically don't earn much CS usualy don't need much CS to be effective, such as supports. These kinds of champions are capable of scaling well off of their skills, stats, and first items alone. Yet, champions with a lot of CS, such as hyper-carries, often need a lot of items to be effective. In either situation, try to exceed the numbers displayed here to do well.
The most important items to have in your Aatrox versus Kassadin build include Goredrinker, Death's Dance, and Serylda's Grudge. When Aatrox included at least these three pieces in his build, he performed much better versus Kassadin than with many other typical builds. In fact, Aatrox had an average win rate of 51.8% when playing against Kassadin with these items in his kit.
To have the greatest likelihood of coming out on top against Kassadin as Aatrox, you should equip the Conqueror, Triumph, Legend: Tenacity, Last Stand, Revitalize, and Bone Plating runes from the Precision and Resolve rune sets. Of all the rune builds players used for Aatrox vs Kassadin LoL games, this set of runes yielded the greatest win rate. Moreover, these runes averaged a 51.8% win rate overall.
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