Olaf can combine Berserker Rage, Vicious Strikes, and Ragnarok at low life to become deceptively strong.
The bonus healing granted by Vicious Strikes amplifies your Life Steal from all sources as well as heals from allies.
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.
Kassadin deals mostly magic damage. If he's doing well consider buying magic resist items like Mercury's Treads and Banshee's Veil.
Each time Kassadin consecutively uses Riftwalk, he pays more and more mana. Keep this in mind as you chase him.
The stat comparisons shown on this page show some valuable Olaf against Kassadin matchup statistics that can help us figure out the differences and similarities between the pair. Olaf’s KDA ratio ([kills + assists] / deaths) of NaN is more than Kassadin’s KDA ratio of NaN, demonstrating that Olaf may be more central to his team's team fighting capability than Kassadin..
Olaf typically has a similar longest kill spree as his enemy does. On average, he receives a similar amount of damage to Kassadin. This commonly reflects differing health capacities; however, it can also hint that the one champ has less mobility and thus is unable to kite away from further damage when engaged or poked.
Both LoL champions are great champions. Both champs have their pros and cons. In League's current meta, Olaf usually loses when trying to fight Kassadin, with a 48.8% win rate. Thus, Olaf makes a bad counter to Kassadin.
While Olaf does have a lower winrate compared to Kassadin, when they face off with one another, Olaf also has a much lower learning curve that makes him a less time consuming character to pick up and master. You should be careful when picking Olaf into Kassadin.
Furthermore, Olaf also has almost no amount of CC and other utility, a similar amount to Kassadin. This often makes her just as valuable during team fights, especially when fighting champions with a ton of burst damage.
While there isn't one best champion in League of Legends, in Olaf vs Kassadin matchups, Kassadin is the better champ with a lower win rate, less champion complexity, and a similar amount of utility to help out your allies during team fights.
Olaf is a somewhat poor counter to Kassadin. You will do well by focussing your actions on keeping up your CS and clearing objectives. If you do that, you should do very well as Olaf against Kassadin.
If you would like to truly master Olaf in order to counter Kassadin during both the early game and mid / late game phases of League of Legends, you should keep reading to learn a few extra tricks and insights into this matchup. If you pay attention to the build and tips presented above, you should grow your win rate significantly and be closer to League of Legends pro players.
Olaf often accumulates a similar amount of CS relative to Kassadin. Champions who typically don't get much CS often don't have to have much CS to be effective, such as supports. These kinds of champions are able to scale well off of their abilities and first items alone. Yet, champs with large amounts of CS, such as hyper-carries, often need several high cost items to be effective. In either case, try to surpass the numbers shown on this page to do well.
The best items to focus on in your Olaf versus Kassadin build include Sterak's Gage, Experimental Hexplate, and Ravenous Hydra. When Olaf included at least these three pieces in his build, he performed a lot better vs. Kassadin than with many other commonly used builds. In fact, Olaf boasted an average win rate of 48.8% battling Kassadin with this counter build.
To have the greatest chance of beating Kassadin as Olaf, you should equip the Conqueror, Triumph, Legend: Alacrity, Last Stand, Approach Velocity, and Biscuit Delivery runes from the Precision and Inspiration rune sets. Out of all the rune builds that we analyzed for Olaf vs Kassadin counters, this combo of runes yielded the highest win rate. In fact, these runes averaged a 48.8% winrate overall.
By default, tips, statistics, and builds on how to beat Kassadin as Olaf are shown for all ranked divisions. If you want to filter the statistics and builds to a specific skill level, you may use the selection menu located above.