Kassadin's ultimate has many uses and is on a shorter cooldown than most, use it often.
Kassadin has multiple item paths; he can go caster via Mana and Ability Power or anti-caster with Cooldown Reduction and Magic Resist.
Try to get the Ancient Golem buff to counteract Riftwalk's increasing Mana cost.
Pale Cascade orbs only last a few seconds. Avoid Diana and engage her after the shield dissipates.
Diana can play very aggressively if she uses Lunar Rush without Moonlight, but you can punish her by slowing or stunning her when she has no way to get back into position.
Dodge Crescent Strike, or move to safety if you are affected by Moonlight.
The stat comparisons shown on this page clarify some important Kassadin against Diana matchup statistics that can help us realize the differences and similarities between the pair. Kassadin’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Diana’s ratio of NaN, indicating that Kassadin may be more central to his team's team fighting capacity than Diana..
Kassadin normally has a similar longest killing spree as his foe does. Commonly, he takes more damage than Diana. This typically indicates different amounts of tankyness, but it can also show that the one champ has less agility and thus is not able to flee from additional harm when poked or engaged.
Both League champions are great champions. Both have their strengths, weaknesses, and counters. In the game's current meta, Kassadin usually wins when trying to fight Diana, with a 51.2% win rate. Therefore, Kassadin makes a good counter for Diana.
While Kassadin does have a higher winrate compared to Diana, when they face off with one another, Kassadin also has a much greater learning curve that makes him a more difficult champ to learn and master. You should be careful when picking Kassadin into Dianaas his relative depth means you may not be able to unleash his full potential without a lot of practice beforehand.
Additionally, Kassadin has some amount of utility and CC, a similar amount to Diana. 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 for every situation in League of Legends, in Kassadin vs Diana matchups, Kassadin is the better champ with a higher win rate, more champion depth, and a similar amount of utility to help out your teammates during teamfights.
Kassadin is a decent counter for Diana. Focus your gameplay on maximizing your CS and destroying objectives. If you are able to do that, you should do very well as Kassadin against Diana.
If you would like to learn all of the intricacies of Kassadin to counter Diana during both the early game and mid / late game phases of League of Legends, you should continue reading to gather a few extra tips and tricks for this matchup. If you pay attention to the build and stats shown above, you will grow your win rate by a lot and be closer to League of Legends pro players.
Kassadin usually gets more CS as Diana. Champs who typically don't acquire much CS usualy don't need much CS to be valuable teammates, such as supports. These kinds of champions are able to scale well off of their abilities and first items alone. Yet, champions with a lot of CS, such as hyper-carries, usually have to have a lot of items to be effective. In either case, try to exceed the numbers displayed here to do well.
The most important items to prioritize in your Kassadin versus Diana build include Seraph's Embrace, Rabadon's Deathcap, and Zhonya's Hourglass. When Kassadin combined at least these three pieces in his build, he did a lot better countering Diana than with most other typical builds. In fact, Kassadin had an average winrate of 51.2% battling Diana with this counter build.
To have the highest chance of beating Diana as Kassadin, you should equip the First Strike, Magical Footwear, Future's Market, Cosmic Insight, Sudden Impact, and Ultimate Hunter runes from the Inspiration and Domination rune sets. Out of all the rune builds players chose for Kassadin vs Diana battles, this blending of runes resulted in the best win rate. In fact, these runes provided a 51.2% win rate overall.
By default, tips, statistics, and builds on how to beat Diana as Kassadin are presented for all skill levels, merged. To filter the stats and builds to a particular skill level, you should use the selection menu earlier on the page.